In this large, randomized trial, the investigators compared outcomes in patients with chronic obstructive pulmonary disease (COPD) treated with once-daily inhalation of tiotropium or placebo. There was no benefit of treatment on the rate of loss of lung function over time, although benefits were observed in some secondary end points.

Influenza infection causes significant morbidity in pregnant woman and neonates. In this randomized study of 340 pregnant women in Bangladesh, influenza vaccination during pregnancy was found to decrease laboratory-proven influenza infection in neonates by 63% and febrile respiratory illness in the mothers by more than a third.

A post-trial monitoring study involving follow-up of patients with type 2 diabetes who had been assigned to tight or less-tight blood-pressure control revealed that benefits of previously improved control were not sustained when between-group blood-pressure differences equalized. Early improved blood-pressure control in patients with type 2 diabetes and hypertension was associated with a reduced risk of complications, but it must continue for benefits to be sustained.

This trial was conducted to determine whether the reduction in microvascular risk and improved glycemic control that had been observed with medical therapy, as compared with conventional dietary treatment, in patients with newly diagnosed type 2 diabetes was sustained during 10 years of follow-up. Despite an early loss of glycemic differences, continued microvascular risk reduction and emergent risk reductions for myocardial infarction and death from any cause were observed.