Background: While the sex difference in prevalence rates of unipolar depres
sion is well established, few studies have examined Sender differences in c
linical features of depression. Even less is known about gender differences
in chronic forms of depression. Methods: 235 male and 400 female outpatien
ts with DSM-III-R chronic major depression or double depression (i.e., majo
r depression superimposed on dysthymia) were administered an extensive batt
ery of clinician-rated and self-report measures. Results: Women were less l
ikely to he married and had a younger age at onset and greater family histo
ry of affective disorder compared to men. Symptom profile was similar in me
n and women, with the exception of more sleep changes, psychomotor retardat
ion and anxiety/somatization in women. Women reported greater severity of i
llness and were more likely to have received previous treatment for depress
ion with medications and/or psychotherapy. Greater functional impairment wa
s noted by women in the area of marital adjustment, while men showed more w
ork impairment. Limitations: Since our population consisted of patients enr
olling in a clinical trial, study exclusion criteria may have affected gend
er-related differences found. Conclusions: Chronicity of depression appears
to affect women more seriously than men, as manifested by an earlier age o
f onset, greater family history of affective disorders, greater symptom rep
orting, poorer social adjustment and poorer quality of life. These findings
represent the largest study to date of gender differences in a population
with chronic depressive conditions. (C) 2000 Elsevier Science B.V. All righ
ts reserved.