Figure 4. Logistic regression model predicting the odds of non-remission according to increasing numbers of sleep disturbances.
Filled diamonds depict adjusted odds ratios predicting non-remission; filled circles depict lower and upper 95% confidence limits. Odds ratios are adjusted for age, sex, antidepressant medication usage (yes/no), duration of follow-up, and baseline depressive symptom severity (HRSD with sleep items removed). Referent group are those with no sleep disturbances.