Table 4

Odds ratios for onset of depression at various times according to negative self-schema score measured at 18 weeks of pregnancy

Outcome Sample size1n Women with depression who were not depressed at previous time points n (%) Not depressed n Odds ratios
Negative self-schema score at 18 weeks of pregnancy2 OR (95% CI) EPDS score at 18 weeks of pregnancy3 OR (95% CI)
EPDS, Edinburgh Postnatal Depression Scale. All P values are <0.001.
1. Sample size refers to the number of participants who were not depressed at baseline or any subsequent assessments before the outcome was measured.
2. Adjusted for depressive symptom score at 18 weeks of pregnancy.
3. Adjusted for negative self-schema score at 18 weeks of pregnancy.
Depression onset at 32 weeks of pregnancy 8539 736 (8.6) 7803 1.07 (1.05-1.10) 1.36 (1.32-1.40)
Depression onset 8 weeks post-partum 7249 320 (4.4) 6929 1.07 (1.04-1.11) 1.21 (1.17-1.26)
Depression onset 8 months post-partum 6505 196 (3.0) 6309 1.10 (1.05-1.14) 1.20 (1.14-1.26)
Depression onset 21 months post-partum 5719 207 (3.6) 5512 1.11 (1.07-1.16) 1.16 (1.11-1.21)
Depression onset 33 months post-partum 5008 212 (4.2) 4796 1.10 (1.06-1.14) 1.18 (1.13-1.23)