Statistical Analysis
depression
REGRESSION, SECONDARY
We used descriptive statistics to examine depression treatment response by modality (PST or ADT) and the presence of side effects. We conducted bivariate analyses to examine differences in patient characteristics between those treated with PST versus ADT, and those whose depression did or did not respond to treatment. We used chi-squared tests for categorical variables and two-tailed independent t-tests for continuous variables, with an We used multivariable logistic regression models, estimated using SAS Proc Surveylogistic, to further examine predictors of treatment response using variables found to be significant correlated with response in bivariate analyses. These models were adjusted for baseline demographics (age, any secondary education, relationship status), weeks on depression treatment, and study site. Analyses were conducted using SAS version 9.2 (SAS Institute, Cary, NC).