Correction

Spinal Bone Loss and Ovulatory Disturbances

N Engl J Med 1993; 328:1724June 10, 1993

Article

Spinal Bone Loss and Ovulatory Disturbances (Original Article, N Engl J Med 1990:323;1221 - 1227) . In Table 2, on page 1224, in the values for “Luteal-phase analysis,” the number of women with normal cycles should have been 6 for those normally active and 5 for those who were consistent runners; the number of women with >1 short luteal phase should have been 13 for those normally active and 5 for those who were consistent runners (not 7, 4, 10, and 8, as printed).