In multivariable logistic regression analysis (Table 4) with all individual characteristics entered (age, race/ethnic group, education, employment, income, marital/cohabiting status, CD4+ cell count) and controlling for study site, lifetime mood disorder was less likely among women who were working than not working [odds ratio (95% confidence interval) OR 0.7 (0.5–1.0)]. Here, CD4 is linked to mood disorder.