Outcomes—Depression Status
Table 4 displays the results of the generalized linear
mixed effects model for intervention status and patient
factors predicting improved outcomes at 6 and 12
months’ postpartum. Although depression outcomes
differences did not reach our preset level of statistical signifi cance at 6 months, both the direction and
strength of the association (P = .07) lend support to
the positive impact of the intervention seen at 12
months. The odds ratio for a 5-point drop in PHQ-9
between baseline and 12 months was 1.8 (95% CI, 1.1-
2.9) (P = .001). The intraclass correlation coeffi cient
for the 12-month change in PHQ-9 score, estimated
from the variance components computed in S-PLUS,
was 0.037.