Table 3.
Mixed-effects poisson regression results for EPDS scores during pregnancy and postpartum. Shown are both the coefficients (SE) as well as the Incident Rate Ratios (IRR), which are the antilogs of the coefficients. P-values are from Likelihood ratio tests.
| Variable | Coefficient (SE) | IRR (SE) | p-value | |
|---|---|---|---|---|
| Pregnancy: | ||||
| Screening results1 | 0.007 | |||
| SS+/US− | 0.28 (0.14) | 1.32 (1.15) | ||
| SS−/US+ | 0.61 (0.19) | 1.83 (1.20) | ||
| SS+/US+ | 0.27 (0.23) | 1.31 (1.25) | ||
| Previous psychiatric diagnosis | 0.60 (0.19) | 1.82 (1.21) | 0.002 | |
| Weeks of gestation | 0.001 (0.004) | 1.00 (1.00) | 0.71 | |
| Postpartum: | ||||
| Screening results1 | 0.01 | |||
| SS+/US− | 0.29 (0.16) | 1.33 (1.18) | ||
| SS−/US+ | 0.57 (0.22) | 1.77 (1.25) | ||
| SS+/US+ | −0.37 (0.29) | 0.69 (1.34) | ||
| Previous psychiatric diagnosis | 0.62 (0.24) | 1.86 (1.27) | 0.01 | |
| Weeks postpartum | −0.01 (0.004) | 0.99 (1.00) | 0.001 | |
1
The reference category is all negative screening results