Table 3

Odds ratios of becoming depressed by tertiles of negative self-schema score: unadjusted, adjusted for depression (EDPS) score at 18 weeks (Adjustment 1) and adjusted for other confounders (Adjustment 2)

n Prevalence of depression (%) OR (95% CI) Adjustment 1 OR (95% CI) Adjustment 2 OR (95% CI)
EPDS, Edinburgh Postnatal Depression Scale.
1. Adjusted for past history of depression, parental history of depression, smoking, housing tenure, crowding in household, marital status, education, age, car ownership, unemployment in partner, parity and also time between measures.
Negative self-schema score
     First tertile (0-2) 2702 4.8 1.00 1.00 1.00
     Second tertile (3-5) 2772 7.0 1.48 (1.18-1.86) 1.16 (0.91-1.46) 1.24 (0.96-1.60)
     Third tertile (6-18) 3066 13.4 3.04 (2.48-3.73) 1.56 (1.26-1.93) 1.60 (1.27-2.02)
P<0.001 P<0.001 P<0.001
Sample size 8540 n=8540 n=8540 n=7845