Stephanie Kasen and Patricia Cohen are with the Department of Psychiatry, College of Physicians and Surgeons, Columbia University, New York, NY, and the Department of Epidemiology, New York State Psychiatric Institute, New York; Patricia Cohen is also with the Department of Epidemiology, School of Public Health, Columbia University. Henian Chen and Dorothy Castille are with the Department of Epidemiology, School of Public Health, Columbia University, and the Department of Epidemiology, New York State Psychiatric Institute.
Figure 2—Two plots of the same depression scores: (a) longitudinal age changes in depression assessed in 5 female birth-year cohorts and (b) cross-sectional age differences in depression in 3 samples of women.