Our methods could not assess lifetime prevalence for disorders other than major depression (with or without bereavement). Across all ages, the lifetime prevalence of major depression (Table 4) was 9.6% (SE, 0.68) for men, 20.4% (SE, 0.78) for women, and 15.8% (SE, 0.54) overall (adjusted prevalence OR for women, 2.54; 95% CI, 2.12-3.04; P<.001). In 86% of the subjects, the last episode was reported to be after 1960 (ie, after the introduction of tricyclic antidepressants). Prevalence decreased with age (adjusted prevalence OR, 0.96 for each incremental year of age; 95% CI, 0.95-0.97; P<.001). Of the 720 participants with lifetime major depression, 427 (59% [SE, 0.73]) had told their physician doctor about their depression, while 344 (48% [SE, 0.74]) reported past or current treatment with medication (not necessarily antidepressants). Past treatment with electroconvulsive therapy was reported by 22 subjects (3% [SE, 0.25]), while 174 (24% [SE, 0.63]) had received counseling or psychotherapy and 66 (9% [SE, 0.42]) reported having been hospitalized for depression. Women were more likely than men to have told a physician about their depression (χ2=5.43; P=.02), but were equally likely to have received counseling (χ2=0.004; P=.95), medication (χ2=2.203; P=.14), electroconvulsive therapy (χ2=0.122; P=.73), or hospitalization (χ2=0.132; P=.72). When we stratified subjects into those aged 65 to 74, 75 to 84, and 85 years or older, younger individuals were also more likely to have received counseling (χ22=19.70; P<.001), but no age differences were found in the percentage of those who told a physician about their depression (χ22=3.26; P=.19), received medication (χ22=5.89; P=.05), electroconvulsive therapy (χ22=2.93; P=.23), or hospitalization (χ22=2.89; P=.24).