Table 4. Sensitivity analyses of the (a) impact of parental stress on postpartum depression when lagging the exposure of parental stress and (b) impact of parental stress on subthreshold depression.
| Variable | Bivariate analysis OR (95 % CI); p value | Multivariate analysisa AOR (95 % CI); p value |
|---|---|---|
| (a) | ||
| Total stress | 1.05 (1.02–1.09); <0.001 | 1.06 (1.02–1.09); <0.01 |
| Parental distress subscale | 1.16 (1.07–1.26); 0.0001 | 1.20 (1.08–1.32); <0.001 |
| Parent–child dysfunction subscale | 1.06 (1.01–1.12); 0.01 | 1.08 (1.02–1.15); <0.01 |
| Difficult child subscale | 1.06 (1.00–1.13); 0.05 | 1.05 (0.99–1.11); 0.07 |
| (b) | ||
| Total stress | 1.04 (1.01–1.07); <0.01 | 1.04 (1.01–1.07); <0.01 |
| Parental distress subscale | 1.12 (1.04–1.19); <0.001 | 1.12 (1.04–1.19); <0.001 |
| Parent–child dysfunction subscale | 1.05 (0.97–1.14); 0.25 | 1.04 (0.96–1.13); 0.37 |
| Difficult child subscale | 1.06 (1.00–1.14); 0.05 | 1.08 (1.01–1.16); 0.01 |
OR odds ratio, AOR adjusted odds ratio
a
All multivariate models were adjusted for study arm, age, born in the United States, prior history of depression, and number of study visits