Original Article
Antidepressants and the Risk of Falls among Nursing Home Residents
N Engl J Med 1998; 339:875-882September 24, 1998
- Abstract
Background
In nursing home residents, the use of tricyclic and other heterocyclic antidepressants is associated with an increased risk of falls. The newer selective serotonin-reuptake–inhibitor antidepressants are largely free of the side effects of the tricyclic agents thought to cause falls and so have been hypothesized to be safer for those at high risk for falls.
Methods
We retrospectively identified an inception cohort of 2428 nursing home residents in Tennessee who were new users of tricyclic antidepressants (665 subjects), selective serotonin-reuptake inhibitors (612 subjects), or trazodone (304 subjects) or nonusers of antidepressants (847 subjects). We ascertained the number of falls during therapy and during a similar follow-up period for nonusers, then calculated the rate ratios for falls with adjustments for an extensive set of potential confounding factors.
Results
The new users of each type of antidepressant had higher rates of falls than the nonusers, with adjusted rate ratios of 2.0 (95 percent confidence interval, 1.8 to 2.2) for tricyclic antidepressants, 1.8 (1.6 to 2.0) for selective serotonin-reuptake inhibitors, and 1.2 (1.0 to 1.4) for trazodone. The rate ratios increased with the daily dose for tricyclic antidepressants, reaching 2.4 (95 percent confidence interval, 2.1 to 2.8) for doses of 50 mg or more of amitriptyline or its equivalent, and for the serotonin-reuptake inhibitors, reaching 1.9 (1.7 to 2.2) for 20 mg or more of fluoxetine or its equivalent. The elevated rates of falls persisted through the first 180 days of therapy and beyond.
Conclusions
In this large study of nursing home residents, there was little difference in rates of falls between those treated with tricyclic antidepressants and those treated with selective serotonin-reuptake inhibitors. Hence, the preferential use of the newer antidepressants is unlikely to reduce the higher rate of falls among nursing home residents taking antidepressants.
Media in This Article
Figure 1
Adjusted Rate Ratios for Falls According to the Number of Days from the Start of Antidepressant Use.Table 1
Base-Line Characteristics of the Cohort.Article Activity
- Article
Mood disorders are common among nursing home residents1,2 and are associated with substantial excess morbidity and mortality.3-9 Although major depression is treatable in frail elderly persons,10 including nursing home residents,11 there is concern that commonly used drugs increase the risk of falls and related injuries.12,13 Tricyclic and other heterocyclic antidepressants, until recently the predominant therapy among elderly patients, produce psychomotor impairment12 and orthostasis,14-17 which can lead to falls.13,18 In epidemiologic studies of long-term care, users of tricyclic antidepressants have increased rates of falls19-22 and injuries,23-25 with the increase in risk generally ranging from 50 percent to 200 percent. Because residents of long-term care facilities are very susceptible to falls and related injuries, with rates up to three times those of elderly persons living in the community,25,26 this possible adverse effect is of major concern.
Selective inhibitors of the reuptake of serotonin, effective antidepressants largely free of the adverse psychomotor and autonomic effects of tricyclic antidepressants,12,27 may be safer for frail elderly patients at high risk for falls.12,27 However, these drugs are expensive and have potentially undesirable effects in elderly patients.27 We conducted a large inception-cohort study to compare directly the rate of falls among new users of tricyclic antidepressants with that among new users of selective serotonin-reuptake inhibitors.
Methods
Cohort
Potential Members of the Cohort
We identified new users of tricyclic antidepressants, selective serotonin-reuptake inhibitors, or trazodone and residents who did not use any antidepressant in an inception-cohort design. We measured the risk factors for falls before the start of antidepressant therapy, because antidepressant drugs can affect these factors. The study included patients who terminated therapy early because of adverse effects of the medication that increased the risk of falls. The cohort was drawn from the computerized records of two pharmacy consultants in Tennessee that served a total of 80 nursing homes. We approached the 55 facilities with the most frequent use of selective serotonin-reuptake inhibitors, of which 54 agreed to participate and 53 had records of adequate quality. For each facility, we then designated a study period during which residents were eligible for inclusion in the cohort (the beginning of the period varied from 1993 to 1996, depending on when we contacted the facility and its retention of records). The length of the study period varied among the facilities.
New Users of Antidepressants
For each resident identified as a new user of antidepressants, we reviewed medication-administration and other records to confirm drug use and eligibility for the cohort. New users had to have been in the facility for 30 days or more (to be reliably identified by the consulting pharmacists' monthly records) and to have a qualifying episode of antidepressant use, defined as use that began during the study period and in the facility by a resident at least 65 years of age with no antidepressant use during the previous 90 days. If there were multiple qualifying episodes, we included only the first.
The analysis in this study was restricted to new users of either tricyclic or other heterocyclic antidepressants, selective serotonin-reuptake inhibitors, or trazodone, an atypical antidepressant commonly used in long-term care because of its sedative properties.27 The analysis excluded users of multiple types of antidepressants and those for whom the primary reason for starting therapy was somatic (migraine, peripheral neuropathy, or pain).
Nonuser Control Subjects
Nonuser control subjects were randomly selected from among the residents not taking antidepressants. For logistic efficiency, one nonuser was selected for every pair of new users of antidepressants (stratified according to facility and type of antidepressant). The nonusers were matched to the date of admission (±2 years) and the index date (the date antidepressant therapy began) of a randomly selected member of the new-user pair. Nonusers had to meet the same criteria for cohort eligibility on the index date as the new users.
Follow-up Period
The follow-up period began on the day after the index date. The follow-up period for new users ended at the time they left the facility (because of discharge, death, transfer, or a hospital stay of more than 14 days) or at the time of cessation of antidepressant use for more than 14 days, whichever was earlier, and for nonusers it ended at the time they left the facility, at the time they started antidepressant use, or at the time the matched new user's follow-up ended. The last study day was considered to contribute one half person-day to the follow-up period. Days on which multiple types of antidepressants or nonstudy antidepressants were used were excluded.
Data Collection
Base-line variables for which information was abstracted from the nursing home records included the admission date, demographic characteristics, current height and weight, ambulatory status, functional status (as defined in the Minimum Data Set28), medications and physical restraints used in the previous 7 days, falls in the previous 90 days, and the primary reason antidepressant therapy was started (classified as depression or depressive symptoms, behavioral symptoms of dementia, insomnia, or anxiety, or other or unknown). Insomnia, a symptom of depression, was classified separately because it is a common reason for the use of tricyclic antidepressants in elderly patients. Missing values (which never involved more than 2.5 percent of the subjects) were resolved by imputation, with the assumption that data were missing completely at random.
The use and dose of antidepressants, benzodiazepines, antipsychotic drugs, and other sedative or hypnotic agents were abstracted for each day of study follow-up. Doses were converted into equivalent units on the basis of recommendations for elderly patients.29
Outcome
The primary study outcome was the number of falls during the follow-up period, ascertained from both nursing home incident reports and medical records.30 Injurious falls25 were those that caused medically treated injuries (fractures, joint dislocations or sprains, sutured lacerations, or head injuries with altered consciousness).
Statistical Analysis
Follow-up for the antidepressant users was classified according to the type of drug and the dose taken each day, and univariate rates of falls and rate ratios (with the nonuser control subjects as the reference group) were calculated. Poisson regression models were used to adjust rate ratios for both base-line characteristics of the subjects (age, sex, race, time since admission to facility, body-mass index, ambulatory status, number of activities of daily living in which the resident was totally dependent on care providers, incontinence, cognitive impairment, use of physical restraints, previous falls, and use of anticonvulsant or antiparkinsonian drugs) and time-dependent factors (use of benzodiazepines, antipsychotic drugs, or other sedatives and the number of days since the index date [1 to 30, 31 to 90, 91 to 180, or ≥181 days]). To control for coexisting illnesses, we also fitted models with terms for base-line use of medications, including analgesics, antihypertensive drugs, other cardiovascular drugs, hypoglycemic drugs, antimicrobial drugs, antihistamines, bronchodilators, and oral corticosteroids. These terms did not materially affect the estimates, so they were not included in the final model. There was no evidence of overdispersion,31 which suggests that the Poisson assumption was satisfied. Alternative mixed-effects Poisson regression models that controlled for the inclusion in the analysis of multiple falls per resident and effects due to the facility had essentially identical findings.
All P values are two-sided. P values for comparisons of adjusted rate ratios were calculated from single-degree-of-freedom contrasts with Wald statistics. All regressions were performed with SAS Proc Genmod Software (version 6.12, SAS Institute, Cary, N.C.).
Results
Characteristics of the Cohort
The cohort included 2428 elderly nursing home residents, of whom 665 were new users of tricyclic antidepressants, 612 were new users of selective serotonin-reuptake inhibitors, and 304 were new users of trazodone; 847 did not use any antidepressants. During the 1460 person-years of study follow-up, members of the cohort had 3524 falls (241 per 100 person-years) and 213 injurious falls (15 per 100 person-years).
The study cohort was frail and highly impaired (Table 1Table 1
Base-Line Characteristics of the Cohort.). The mean age was 82 years, 75 percent were women, 60 percent used a wheelchair or were chairbound or bedbound, 35 percent were incontinent, 22 percent had major cognitive impairment, 24 percent had been physically restrained in the previous seven days, and 26 percent and 20 percent, respectively, used benzodiazepines or antipsychotic drugs at base line. In the 90 days preceding the index date, the members of the cohort had a mean number of falls of 0.8.The base-line characteristics of the cohort varied markedly with the use or nonuse of antidepressants (Table 1). As compared with the nonusers, the users of antidepressants had greater mobility, increased use of psychotropic and other types of drugs, and roughly twice as many falls in the previous 90 days, suggesting a greater base-line risk of falls.25,32-34 The users of antidepressants were less likely to be black, had been admitted more recently to the facility, and had a lower prevalence of major cognitive impairment. As compared with the users of tricyclic antidepressants, the users of selective serotonin-reuptake inhibitors had been admitted to the facility more recently, had a lower prevalence of major cognitive impairment, and had a lower frequency of physical restraint. The users of trazodone had been admitted more recently, had a greater prevalence of major cognitive impairment, and were more likely to have used psychotropic drugs than the users of tricyclic antidepressants.
The primary reason for starting antidepressant therapy differed according to the type of drug. Depression or the occurrence of depressive symptoms was the primary indication for 55 percent of the users of tricyclic antidepressants, 74 percent of those who used selective serotonin-reuptake inhibitors (P<0.001 for the comparison with tricyclic agents), and 34 percent of those who used trazodone (P<0.001 for the comparison with tricyclic agents); behavioral symptoms of dementia were the primary indication for 18 percent, 11 percent, and 23 percent, respectively; insomnia or anxiety for 16 percent, 3 percent (P<0.001), and 36 percent (P<0.001); and other or unknown indications for 10 percent, 11 percent, and 8 percent.
The antidepressant drugs were used at relatively low doses. By day 7 of therapy, the mean daily doses were 37 mg of amitriptyline or its equivalent for those using tricyclic agents, 16 mg of fluoxetine or its equivalent for those using selective serotonin-reuptake inhibitors, and 53 mg of trazodone for those using that drug.
Rates of Falls According to Type of Antidepressant
The users of each of the three types of antidepressants had a higher rate of falls than the nonusers, even after adjustments were made for differences in potential confounding factors (Table 2Table 2
Rate of Falls According to Type of Antidepressant and Specific Drug.). The rate was highest for the users of tricyclic antidepressants, who had an adjusted rate ratio of 2.0 (95 percent confidence interval, 1.8 to 2.2). This was significantly greater than the rate ratios of 1.8 (1.6 to 2.0, P=0.001) for the users of selective serotonin-reuptake inhibitors and 1.2 (1.0 to 1.4, P<0.001) for the users of trazodone. Within each group, there were no significant differences between the users of individual drugs. For injurious falls, the adjusted rate ratios were greater than 1.0 for the users of each of the three types of antidepressants — 1.3 (95 percent confidence interval, 0.9 to 1.9) for those using tricyclic antidepressants, 1.7 (1.2 to 2.5) for those using selective serotonin-reuptake inhibitors, and 1.1 (0.7 to 1.8) for those using trazodone — but the confidence intervals for the tricyclic agents and trazodone included 1, and there were no statistically significant differences among the rate ratios.For the users of tricyclic and selective serotonin-reuptake–inhibitor antidepressants, the rate of falls increased with increasing daily doses of the drug (Table 3Table 3
Rate of Falls According to Dose of Antidepressant.). The adjusted rate ratio for the users of tricyclic agents as compared with the nonusers was 1.2 for those who used 10 mg or less of amitriptyline or its equivalent and 2.4 for those who used more than 50 mg (P<0.001 by the test for linear trend). For the users of selective serotonin-reuptake inhibitors, the adjusted rate ratio was 1.5 for those who used less than 20 mg of fluoxetine or its equivalent and 1.9 for those who used 20 mg or more (P<0.001). However, for the users of trazodone, those who used less than 50 mg had a higher rate of falls than those who used 50 mg or more.The elevated rates of falls for users of antidepressants persisted over the course of therapy (Figure 1Figure 1
Adjusted Rate Ratios for Falls According to the Number of Days from the Start of Antidepressant Use.). The residents who received tricyclic agents or selective serotonin-reuptake inhibitors for more than 180 days (as compared with nonusers with similar duration of follow-up) had adjusted rate ratios of 2.0 and 1.9, respectively; these rate ratios were not significantly different (P>0.05) from those for the first 30 days of therapy (2.5 and 2.1, respectively). Within each period, the rate ratios were highest for the users of tricyclic antidepressants and lowest for the users of trazodone.The rate of falls varied according to the primary reason antidepressant therapy was started. For each type of antidepressant, the residents who began taking the drug for behavioral symptoms of dementia (adjusted rate ratios: users of tricyclic antidepressants, 2.4 [95 percent confidence interval, 2.1 to 2.7]; users of selective serotonin-reuptake inhibitors, 2.3 [2.0 to 2.7]; and users of trazodone, 1.4 [1.1 to 1.7]) had higher rates of falls than those who began therapy for depression or depressive symptoms (rate ratios of 1.8 [95 percent confidence interval, 1.6 to 2.0], 1.7 [1.6 to 1.9], and 1.1 [0.9 to 1.3], respectively; P<0.001 for the users of tricyclic agents and selective serotonin-reuptake inhibitors; P=0.03 for the users of trazodone). The residents who began taking antidepressant drugs for insomnia or anxiety had the following adjusted rate ratios for falls: 2.4 (95 percent confidence interval, 2.1 to 2.8) for the users of tricyclic agents, 1.8 (1.3 to 2.4) for the users of selective serotonin-reuptake inhibitors, and 1.2 (1.0 to 1.4) for the users of trazodone.
We assessed the effect of excluding potentially atypical residents from the cohort: those who were chairbound or bedbound, who started antidepressant therapy for insomnia or anxiety, or who were receiving very low doses of antidepressants. None of these exclusions materially changed the primary findings (Table 4Table 4
Rates of Falls within Subgroups.).Because cardiovascular disease increases the severity of orthostasis caused by tricyclic antidepressants,35 we assessed the rate of falls according to the base-line use of cardiovascular medications (Table 4). For the users of tricyclic antidepressants, the adjusted rate ratios were 1.8 for those taking no cardiovascular medications and 3.3 for those taking three or more medications (P<0.001). In contrast, there was no such trend for the users of selective serotonin-reuptake inhibitors. Thus, there was no significant difference between the adjusted rate ratio for the users of tricyclic agents and that for the users of selective serotonin-reuptake inhibitors taking no more than one cardiovascular medication; however, the users of tricyclic agents had a greater rate of falls if they took two (P<0.001) or three or more (P<0.001) cardiovascular medications. The rate of falls among the users of trazodone did not vary according to base-line use of cardiovascular medications.
Discussion
Our primary objective was to compare the relative safety of tricyclic and selective serotonin-reuptake–inhibitor antidepressants with regard to falls, a critical end point for frail elderly patients. When the study began, several reports had shown that older users of tricyclic antidepressants had increased rates of falls and related injuries,19-25 which was consistent with the pharmacologic properties of such antidepressants and studies of surrogate end points.12 However, this association was controversial36 because these investigations had not been specifically designed to study antidepressants and consequently had small numbers of antidepressant users or limited measurement of potential confounding factors. The introduction and wide use of selective serotonin-reuptake inhibitors, which are largely free of the side effects thought to cause falls among the users of tricyclic antidepressants, provided the opportunity to address this clinical controversy by allowing a direct comparison of the rates of falls among the users of the two types of antidepressants.
The study was conducted among nursing home residents for several reasons. This population has a strikingly high prevalence of serious mood disorders, at least half of which are not treated.2,9 Because nursing home residents also have the greatest vulnerability to falls and related injuries,25,26 clarifying the relative potential of tricyclic and selective serotonin-reuptake–inhibitor antidepressants to cause falls is of major clinical importance. Nursing homes provided several logistic advantages that made it possible to study efficiently the large number of patients needed to detect differences between the drugs. First, nursing homes are federally required28 to collect detailed information on the base-line risk factors for falls; second, records of medication administration track the type of antidepressants and the doses actually taken each day; and third, incident reports and other records provide a log of falls.
Our findings confirmed the association between the use of tricyclic antidepressants and increased rates of falls. After adjustments were made for potential confounding factors, the new users of these drugs had a rate of falls during therapy that was twice that of the nonusers of antidepressants. There was a pronounced dose–response relation, and the increased rate of falls persisted throughout the period of therapy. However, the new users of selective serotonin-reuptake inhibitors also had a rate of falls that was 80 percent higher than that of the nonusers, and the rate increased with increasing dose and persisted throughout the period of therapy, although there was some evidence that these drugs were safer in the residents with more severe cardiovascular disease. Our findings are consistent with a recent report suggesting that both types of antidepressants confer an increased risk of hip fracture,37 although that record-linkage study could not adjust for many potential confounding factors.
Our findings thus suggest either that the rate of falls is increased by the use of tricyclic or selective serotonin-reuptake–inhibitor antidepressants or that this increase is due to depression or its cofactors. Selective serotonin-reuptake inhibitors do not cause impairment as ascertained by most tests of psychomotor function and do not produce orthostasis and thus have not been thought to increase the risk of falls.12 However, one study reported an increase in postural sway among older patients taking sertraline,38 although this finding was not confirmed in subsequent reports on paroxetine, sertraline, and fluoxetine.39,40
How could depression or its correlates increase the rate of falls? Because depression increases as the level of disability increases,41 we considered the possibility that our findings reflected base-line differences between the new users and the nonusers of antidepressant drugs. However, our findings persisted after we controlled for an extensive set of measures of base-line impairment, including functional status, cognitive impairment, medical illnesses, use of neurologic or psychotropic medications, and recent history of falls.
Our data are consistent with the hypothesis that a change in the health of residents of long-term care facilities that occurs near the time antidepressant therapy begins increases the rate of falls. This change could include the depression itself or worsening medical or neurologic conditions. A diagnostic hallmark of major depression is psychomotor impairment, and clinical experience suggests that depressed patients are “accident prone.”42,43 Psychomotor impairment may be less responsive to therapy than neurovegetative and cognitive symptoms.44,45 Clinical experience suggests that in frail elderly patients, the onset or intensification of depressive symptoms often accompanies medical or neurologic deterioration.41 This line of reasoning is supported by the higher rates of falls among patients for whom behavioral symptoms — indicators of the progression of dementia — were the primary reasons for starting antidepressant therapy and by the persistence of increased rates of falls throughout the period of therapy.
The atypical antidepressant trazodone accounted for 18 percent of the antidepressant use by the cohort. Interestingly, the residents taking this drug had only a 20 percent increase in the rate of falls. Although trazodone is not thought to be a highly effective antidepressant,27 it is strongly sedating and is thus commonly prescribed for agitation or insomnia.46 Indeed, for 59 percent of the trazodone users, behavioral symptoms of dementia, insomnia, or anxiety were the primary reason for starting the drug. Thus, differences in the prevalence and severity of depression may have accounted for the lower rate of falls among the users of trazodone. This possibility is supported by the fact that the 20 percent increase in the rate of falls among the trazodone users was identical to that among the users of very low doses of tricyclic antidepressants (equivalent to 10 mg or less of amitriptyline), which, when given at these doses, have primarily hypnotic effects.46
In summary, our findings suggest that the elevated rates of falls and related injuries among most nursing home residents taking tricyclic antidepressants would not be materially reduced by the preferential use of selective serotonin-reuptake inhibitors. All nursing home residents receiving antidepressants should be considered at increased risk for falls, and appropriate preventive countermeasures should be taken.47
Supported in part by a grant from the Centers for Disease Control and Prevention (R49/CCR410144) and by a cooperative agreement with the Food and Drug Administration (FD-U-000073-11).
Source Information
From the Division of Pharmacoepidemiology, Department of Preventive Medicine, Vanderbilt University School of Medicine, Nashville (P.B.T., P.G., W.A.R.); Cost Consulting, Nashville (T.W.C.); and Pharmaceutical Consulting Services, Murfreesboro, Tenn. (A.B.M.).
Address reprint requests to Dr. Ray at the Department of Preventive Medicine, Medical Center North, A-1124, Vanderbilt University Medical Center, Nashville, TN 37232.
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- Citing Articles (134)
Citing Articles
1
Satabdi Chatterjee, Hua Chen, Michael L. Johnson, Rajender R. Aparasu. (2012) Risk of Falls and Fractures in Older Adults Using Atypical Antipsychotic Agents: A Propensity Score–Adjusted, Retrospective Cohort Study. The American Journal of Geriatric Pharmacotherapy
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Timothy A. Roehrs, Christina Diederichs, Thomas Roth. 2012. Pharmacology of Benzodiazepine Receptor Agonist Hypnotics. , 99-108.
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Taro Kojima, Masahiro Akishita, Tetsuro Nakamura, Kazushi Nomura, Sumito Ogawa, Katsuya Iijima, Masato Eto, Yasuyoshi Ouchi. (2012) Polypharmacy as a risk for fall occurrence in geriatric outpatients. Geriatrics & Gerontology Internationalno-no
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K. Szczerbińska, R. Topór-Mądry. (2012) Association between central nervous system drugs and recurrent falling based on prospective falls registration in nursing homes. European Geriatric Medicine
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Taro Kojima, Masahiro Akishita, Tetsuro Nakamura, Kazushi Nomura, Sumito Ogawa, Katsuya Iijima, Masato Eto, Yasuyoshi Ouchi. (2011) Association of polypharmacy with fall risk among geriatric outpatients. Geriatrics & Gerontology International 11:4, 438-444
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Marloes T Bazelier, Tjeerd van Staa, Bernard MJ Uitdehaag, Cyrus Cooper, Hubert GM Leufkens, Peter Vestergaard, Joan Bentzen, Frank de Vries. (2011) The risk of fracture in patients with multiple sclerosis: The UK general practice research. Journal of Bone and Mineral Research 26:9, 2271-2279
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Chia-Ta Chan, Sidney S. Chang, Eng-Kung Yeh, Lih-Chih Jou. (2011) Upper gastrointestinal bleeding in an end-stage renal disease patient treated with fluoxetine. General Hospital Psychiatry 33:5, 530.e1-530.e3
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M. E. L. Arbouw, K. L. L. Movig, T. P. Staa, A. C. G. Egberts, P. C. Souverein, F. Vries. (2011) Dopaminergic drugs and the risk of hip or femur fracture: a population-based case–control study. Osteoporosis International 22:7, 2197-2204
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Eva Román, Joan Córdoba, Maria Torrens, Xavier Torras, Càndid Villanueva, Víctor Vargas, Carlos Guarner, Germán Soriano. (2011) Minimal Hepatic Encephalopathy Is Associated With Falls. The American Journal of Gastroenterology 106:3, 476-482
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Thomas E. Scammell, Christopher J. Winrow. (2011) Orexin Receptors: Pharmacology and Therapeutic Opportunities. Annual Review of Pharmacology and Toxicology 51:1, 243-266
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James K. Walsh, Thomas Roth. 2011. Pharmacologic Treatment of Insomnia. , 905-915.
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Osvaldo P. Almeida, Kylie Marsh, Helman Alfonso, Leon Flicker, Timothy M.E. Davis, Graeme J. Hankey. (2010) B-vitamins reduce the long-term risk of depression after stroke: The VITATOPS-DEP trial. Annals of Neurology 68:4, 503-510
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Bertha Maria Verdel, Patrick C. Souverein, Toine C.G. Egberts, Tjeerd P. van Staa, Hubert G.M. Leufkens, Frank de Vries. (2010) Use of antidepressant drugs and risk of osteoporotic and non-osteoporotic fractures. Bone 47:3, 604-609
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DHANYA GANGADHARAN, SWETHA SIVARAMAKRISHNAN, ASHOK PANDEY, KESAVAN MADHAVAN NAMPOOTHIRI. (2010) Folate-producing lactic acid bacteria from cow’s milk with probiotic characteristics. International Journal of Dairy Technology 63:3, 339-348
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Hideki Shuto, Osamu Imakyure, Junichi Matsumoto, Takashi Egawa, Ying Jiang, Masaaki Hirakawa, Yasufumi Kataoka, Takashi Yanagawa. (2010) Medication use as a risk factor for inpatient falls in an acute care hospital: a case-crossover study. British Journal of Clinical Pharmacology 69:5, 535-542
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Stuart J. Warden, Sean M. Hassett, Julie L. Bond, Johanna Rydberg, Jamie D. Grogg, Erin L. Hilles, Elizabeth D. Bogenschutz, Heather D. Smith, Robyn K. Fuchs, M. Michael Bliziotes, Charles H. Turner. (2010) Psychotropic drugs have contrasting skeletal effects that are independent of their effects on physical activity levels. Bone 46:4, 985-992
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Ian Hindmarch, Kenji Hashimoto. (2010) Cognition and depression: the effects of fluvoxamine, a sigma-1 receptor agonist, reconsidered. Human Psychopharmacology: Clinical and Experimental 25:3, 193-200
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Carolina Aponte Urdaneta, Mugdha Thakur. (2010) Management of Late-Life Depression in the Nursing Home. Psychiatric Annals 40:1, 20-28
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Yue Li, Xueya Cai, Dana B. Mukamel, Laurent G. Glance. (2010) The Volume-Outcome Relationship in Nursing Home Care. Medical Care 48:1, 52-57
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Elizabeth M. Haney, Stuart J. Warden, M. Michael Bliziotes. (2010) Effects of selective serotonin reuptake inhibitors on bone health in adults: Time for recommendations about screening, prevention and management?. Bone 46:1, 13-17
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Petra von Heideken Wågert, Yngve Gustafson, Kristina Kallin, Jane Jensen, Lillemor Lundin-Olsson. (2009) Falls in very old people: The population-based Umeå 85+ Study in Sweden. Archives of Gerontology and Geriatrics 49:3, 390-396
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M. W. M. Brand, M. M. Samson, S. Pouwels, T. P. Staa, B. Thio, C. Cooper, H. G. M. Leufkens, A. C. G. Egberts, H. J. J. Verhaar, F. Vries. (2009) Use of anti-depressants and the risk of fracture of the hip or femur. Osteoporosis International 20:10, 1705-1713
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J. C.T. Close. (2009) Falls in Older People: Risk Factors, Assessment and Intervention. IBMS BoneKEy 6:10, 368-384
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James M. Ellison, Manjola Ujkaj. 2009. Recognition and Treatment of Late-LifeDepression. , 248-265.
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I. Hindmarch. (2009) Cognitive toxicity of pharmacotherapeutic agents used in social anxiety disorder. International Journal of Clinical Practice 63:7, 1085-1094
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Seyed Hossein Mortazavi, Arash Khojasteh, Hamed Vaziri, Ahad Khoshzaban, Mohsen Vahid Roudsari, Sayyed Hassan Emami Razavi. (2009) The effect of fluoxetine on bone regeneration in rat calvarial bone defects. Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology 108:1, 22-27
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Adam Darowski, Sally-Ann C.F. Chambers, David J. Chambers. (2009) Antidepressants and Falls in the Elderly. Drugs & Aging 26:5, 381-394
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James M Ellison, E. Yusuf Sivrioglu, Carl Salzman. 2008. Pharmacotherapy of Late-Life Depression: Evidence-Based Recommendations. , 239-290.
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Stuart J. Warden, Ian R. Nelson, Robyn K. Fuchs, Michael M. Bliziotes, Charles H. Turner. (2008) Serotonin (5-hydroxytryptamine) transporter inhibition causes bone loss in adult mice independently of estrogen deficiency. Menopause 15:6, 1176-1183
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A. Swinkels, J. H. Newman, T. J. Allain. (2008) A prospective observational study of falling before and after knee replacement surgery. Age and Ageing 38:2, 175-181
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Carolyn S. Sterke, Arianne P. Verhagen, Ed F. van Beeck, Tischa J. M. van der Cammen. (2008) The influence of drug use on fall incidents among nursing home residents: a systematic review. International Psychogeriatrics 20:05,
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Fredric O Finkelstein, Diane Wuerth, Laura K Troidle, Susan H Finkelstein. (2008) Depression and end-stage renal disease: a therapeutic challenge. Kidney International 74:7, 843-845
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Richard M Clements. (2008) Reducing psychotropic medications in elderly rehabilitation inpatients with a fall-related admission: How often is it happening?. Geriatrics & Gerontology International 8:3, 139-142
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Olivier Beauchet, Cédric Annweiler, Gilles Allali, Gilles Berrut, François R. Herrmann, Véronique Dubost. (2008) Recurrent Falls and Dual TaskâRelated Decrease in Walking Speed: Is There a Relationship?. Journal of the American Geriatrics Society 56:7, 1265-1269
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Thomas Roth, Timothy Roehrs. (2008) Efficacy and Safety of Sleep-Promoting Agents. Sleep Medicine Clinics 3:2, 175-187
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Meridean L. Maas, Janet P. Specht, Kathleen C. Buckwalter, Josephine Gittler, Kate Bechen. (2008) Nursing Home Staffing and Training Recommendations for Promoting Older Adults’ Quality of Care and Life. Research in Gerontological Nursing 1:2, 123-133
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F. Gankam Kengne, C. Andres, L. Sattar, C. Melot, G. Decaux. (2008) Mild hyponatremia and risk of fracture in the ambulatory elderly. QJM 101:7, 583-588
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(2008) Use of Antidepressants in Nursing Home Residents. The Consultant Pharmacist 23:3, 231-234
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David G Le Couteur, Hal Kendig. (2008) Pharmaco-epistemology for the prescribing geriatrician. Australasian Journal on Ageing 27:1, 3-7
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S. Meeks, S. W. Looney, K. Van Haitsma, L. Teri. (2008) BE-ACTIV: A Staff-Assisted Behavioral Intervention for Depression in Nursing Homes. The Gerontologist 48:1, 105-114
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Tatjana Bulat, Steven Charles Castle, Michelle Rutledge, Patricia Quigley. (2008) Clinical practice algorithms: Medication management to reduce fall risk in the elderly—Part 3, benzodiazepines, cardiovascular agents, and antidepressants. Journal of the American Academy of Nurse Practitioners 20:2, 55-62
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Donna M. Fick, Lorraine C. Mion, Mark H. Beers, Jennifer L. Waller. (2008) Health outcomes associated with potentially inappropriate medication use in older adults. Research in Nursing & Health 31:1, 42-51
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Mugdha Thakur, Dan G. Blazer. (2008) Depression in Long-Term Care. Journal of the American Medical Directors Association 9:2, 82-87
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Joel Raskin, Curtis G. Wiltse, James J. Dinkel, Daniel J. Walker, Durisala Desaiah, Cornelius Katona. (2008) Safety and Tolerability of Duloxetine at 60 mg Once Daily in Elderly Patients With Major Depressive Disorder. Journal of Clinical Psychopharmacology 28:1, 32-38
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Nathalie van der Velde, Willen Jan Meerding, Caspar W Looman, Huibert A P Pols, Tischa J M van der Cammen. (2008) Cost Effectiveness of Withdrawal of Fall-Risk-Increasing Drugs in Geriatric Outpatients. Drugs & Aging 25:6, 521-529
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Gerald Gartlehner, Patricia Thieda, Richard A Hansen, Bradley N Gaynes, Angela DeVeaugh-Geiss, Erin E Krebs, Kathleen N Lohr. (2008) Comparative Risk for Harms of Second-Generation Antidepressants. Drug Safety 31:10, 851-865
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Mamoru TANAKA, Katsuya SUEMARU, Yoshiro IKEGAWA, Noriko TABUCHI, Hiroaki ARAKI. (2008) Relationship between the Risk of Falling and Drugs in an Academic Hospital. YAKUGAKU ZASSHI 128:9, 1355-1361
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B. Mezuk, W. W. Eaton, S. H. Golden. (2008) Depression and osteoporosis: epidemiology and potential mediating pathways. Osteoporosis International 19:1, 1-12
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Chuan-Sheng Zhao, Sirpa Hartikainen, Timothy Schallert, Juhani Sivenius, Jukka Jolkkonen. (2008) CNS-active drugs in aging population at high risk of cerebrovascular events: Evidence from preclinical and clinical studies. Neuroscience & Biobehavioral Reviews 32:1, 56-71
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Cheryl A. Sadowski, Allyson C. Jones, Beverly Gordon, David H. Feeny. (2007) Knowledge of Risk Factors for Falling Reported by Patients with Parkinson Disease. Journal of Neuroscience Nursing 39:6, 336-341
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S. Hartikainen, E. Lonnroos, K. Louhivuori. (2007) Medication as a Risk Factor for Falls: Critical Systematic Review. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences 62:10, 1172-1181
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Mugdha Gore, Alesia Sadosky, Kei-Sing Tai, Brett Stacey. (2007) A Retrospective Evaluation of the Use of Gabapentin and Pregabalin in Patients with Postherpetic Neuralgia in Usual-Care Settings. Clinical Therapeutics 29:8, 1655-1670
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Eric Finkelstein, Malavika Prabhu, Hong Chen. (2007) Increased Prevalence of Falls Among Elderly Individuals With Mental Health and Substance Abuse Conditions. American Journal of Geriatric Psychiatry 15:7, 611-619
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William Spector, Thomas Shaffer, D. E. B. Potter, Rosaly Correa-de-Araujo, M. Rhona Limcangco. (2007) Risk Factors Associated with the Occurrence of Fractures in U.S. Nursing Homes: Resident and Facility Characteristics and Prescription Medications. Journal of the American Geriatrics Society 55:3, 327-333
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Nathalie van der Velde, Bruno H. Ch. Stricker, Huib A. P. Pols, Tischa J. M. van der Cammen. (2007) Risk of falls after withdrawal of fall-risk-increasing drugs: a prospective cohort study. British Journal of Clinical Pharmacology 63:2, 232-237
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Mugdha Gore, Ellen Dukes, David Rowbotham, Kei-Sing Tai, Douglas L. Leslie. (2006) Prevalence of Contraindicated Medical Conditions and Use of Precluded Medications in Patients with Painful Neuropathic Disorders Prescribed Amitriptyline. Pain Practice 6:4, 265-272
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Man Quang Vu, Nancy Weintraub, Laurence Z. Rubenstein. (2006) Falls in the Nursing Home: Are They Preventable?. Journal of the American Medical Directors Association 7:3, S53-S58
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Lisa Leinau, Mark A. Perazella. (2006) Fellows ’ Forum: Hip Fractures in End-Stage Renal Disease Patients: IncidenceRisk Factorsand Prevention. Seminars in Dialysis 19:1, 75-79
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Sunny A. Linnebur, Mary Beth O'Connell, Andrea M. Wessell, Amie D. McCord, Deborah H. Kennedy, George DeMaagd, Larry A. Dent, Michele Y. Splinter, Joseph C. Biery, Feng Chang, Rasheen C. Jackson, Shannon L. Miller, Teresa Sterling. (2005) Pharmacy Practice, Research, Education, and Advocacy for Older Adults. Pharmacotherapy 25:10, 1396-1430
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M. S. Maurer, J. Burcham, H. Cheng. (2005) Diabetes Mellitus Is Associated With an Increased Risk of Falls in Elderly Residents of a Long-Term Care Facility. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences 60:9, 1157-1162
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Le T. T. Hien, Robert G. Cumming, Ian D. Cameron, Jian S. Chen, Stephen R. Lord, Lyn M. March, Jennifer Schwarz, David G. Le Couteur, Philip N. Sambrook. (2005) Atypical Antipsychotic Medications and Risk of Falls in Residents of Aged Care Facilities. Journal of the American Geriatrics Society 53:8, 1290-1295
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A. J. Søgaard, R. M. Joakimsen, A. Tverdal, V. Fønnebø, J. H. Magnus, G. K. R. Berntsen. (2005) Long-term mental distress, bone mineral density and non-vertebral fractures. The Tromsø Study. Osteoporosis International 16:8, 887-897
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Michael Wilcock, Doug MacMahon, Anthony Woolf. (2005) Use of Medicines that Influence Falls or Fractures in a Residential Home Setting. Pharmacy World & Science 27:3, 220-222
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Philip S. Wang, Sebastian Schneeweiss, M. Alan Brookhart, Robert J. Glynn, Helen Mogun, Amanda R. Patrick, Jerry Avorn. (2005) Suboptimal Antidepressant Use in the Elderly. Journal of Clinical Psychopharmacology 25:2, 118-126
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Diane Wuerth, Susan H. Finkelstein, Fredric O. Finkelstein. (2005) PSYCHOSOCIAL FACTORS IN PATIENTS WITH CHRONIC KIDNEY DISEASE: The Identification and Treatment of Depression in Patients Maintained on Dialysis. Seminars in Dialysis 18:2, 142-146
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William B. Baine, Sophia V. Kazakova. (2005) An analysis of administrative data found that proximate clinical event ratios provided a systematic approach to identifying possible iatrogenic risk factors or complications. Journal of Clinical Epidemiology 58:2, 162-170
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BERYL SILKEY, SHELDON H. PRESKORN, AMANDA GOLBECK, ROZINA SHAH, MELISSA NEFF, TERESA L. JONES, JOE CHOI. (2005) Complexity of Medication Use in the Veterans Affairs Healthcare System: Part II. Antidepressant Use Among Younger and Older Outpatients. Journal of Psychiatric Practice 11:1, 16-26
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James K. Walsh, Timothy Roehrs, Thomas Roth. 2005. Pharmacologic Treatment of Primary Insomnia. , 749-760.
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Man Quang Vu, Nancy Weintraub, Laurence Z. Rubenstein. (2005) Falls in the Nursing Home. Journal of the American Medical Directors Association 6:SUPPLEMENT, S81???S87
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Man Quang Vu, Nancy Weintraub, Laurence Z. Rubenstein. (2004) Falls in the Nursing Home: Are They Preventable?. Journal of the American Medical Directors Association 5:6, 401-406
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Joseph V. Agostini, Ling Han, Mary E. Tinetti. (2004) The Relationship Between Number of Medications and Weight Loss or Impaired Balance in Older Adults. Journal of the American Geriatrics Society 52:10, 1719-1723
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Ira R. Katz, Marcia Rupnow, Chris Kozma, Lon Schneider. (2004) Risperidone and Falls in Ambulatory Nursing Home Residents With Dementia and Psychosis or Agitation. American Journal of Geriatric Psychiatry 12:5, 499-508
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Robert C. Smith, Catherine Lein, Clare Collins, Judith S. Lyles, Barbara Given, Francesca C. Dwamena, John Coffey, Anne Marie Hodges, Joseph C. Gardiner, John Goddeeris, C. William Given. (2003) Treating Patients with Medically Unexplained Symptoms in Primary Care. Journal of General Internal Medicine 18:6, 478-489
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Sheryl L. Follin, Jennifer N. Black, Michael T. McDermott. (2003) Lack of Diagnosis and Treatment of Osteoporosis in Men and Women After Hip Fracture. Pharmacotherapy 23:2, 190-198
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Kristine E. Ensrud, Terri L. Blackwell, Carol M. Mangione, Paula J. Bowman, Mary A. Whooley, Douglas C. Bauer, Ann V. Schwartz, Joseph T. Hanlon, Michael C. Nevitt, For The Study of Osteoporotic Fract. (2002) Central Nervous SystemâActive Medications and Risk for Falls in Older Women. Journal of the American Geriatrics Society 50:10, 1629-1637
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Joseph V. Agostini, Mary E. Tinetti. (2002) Drugs and Falls: Rethinking the Approach to Medication Risk in Older Adults. Journal of the American Geriatrics Society 50:10, 1744-1745
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Carl Salzman, Eileen Wong, B.Cody Wright. (2002) Drug and ECT treatment of depression in the elderly, 1996–2001: a literature review. Biological Psychiatry 52:3, 265-284
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David C. Mamo, Bruce G. Pollock, Benoit Mulsant, Patricia R. Houck, Salem Bensasi, Mark C. Miller, Mark S. Redfern, Charles F. Reynolds. (2002) Effects of Nortriptyline and Paroxetine on Postural Sway in Depressed Elderly Patients. American Journal of Geriatric Psychiatry 10:2, 199-205
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C. Ineke Neutel, Sheril Perry, Colleen Maxwell. (2002) Medication use and risk of falls. Pharmacoepidemiology and Drug Safety 11:2, 97-104
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Adam B. Burrows, Carl Salzman, Andrew Satlin, Kenneth Noble, Bruce G. Pollock, Tamara Gersh. (2002) A randomized, placebo-controlled trial of paroxetine in nursing home residents with non-major depression. Depression and Anxiety 15:3, 102-110
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Philip S. Wang, Rhonda L. Bohn, Robert J. Glynn, Helen Mogun, Jerry Avorn. (2001) Zolpidem Use and Hip Fractures in Older People. Journal of the American Geriatrics Society 49:12, 1685-1690
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