Statistical Analysis The primary analysis will be conducted on HAMD and secondary analysis on the IDS scores from baseline to week 4 using the 'last observation carried forward' method in the case of subjects who exit the study prematurely. ANOVA tests and 2 tests will be used to examine differences between demographic and clinical characteristics between the groups for continuous and categorical variables following testing for normality of the data. Repeated measures general linear models will be computed to look for differences in group scores across the study time points (baseline, week 2, week 4) with group as the between subjects variable. Concurrent antidepressant use will be included in a secondary analysis as a covariate.