Table 3.
Odds ratio (OR) and 95% confidence interval (CI) for maternal serum brain-derived neurotrophic factor (BDNF, ng/mL) levels in early pregnancy in relation to antepartum depressive symptoms, Lima, Peru 2012
| BDNF levels (ng/ ml) | Antepartum depression | Unadjusted OR (95% CI) | Adjusted OR (95% CI)* | |||
|---|---|---|---|---|---|---|
| Yes (N = 280) | No (N = 688) | |||||
| n | % | N | % | |||
| Quartile 1 (<17.32) | 75 | 26.8 | 167 | 24.3 | 1.68 (1.11, 2.54) | 1.51 (0.99, 2.30) |
| Quartile 2 (17.32- 20.92) | 78 | 27.9 | 164 | 23.8 | 1.78 (1.18, 2.68) | 1.66 (1.09, 2.52) |
| Quartile 3 (20.92- 25.31) | 76 | 27.1 | 166 | 24.1 | 1.71 (1.14, 2.59) | 1.67 (1.10, 2.53) |
| Quartile 4 (>25.31) | 51 | 18.2 | 191 | 27.8 | Reference | Reference |
| P - value for linear trend | 0.019 | 0.082 | ||||
| Quartile 1– 3 (≤25.31) | 229 | 81.8 | 497 | 72.2 | 1.73 (1.22, 2.44) | 1.61 (1.13, 2.30) |
| Quartile 4 (>25.31) | 51 | 18.2 | 191 | 27.8 | Reference | Reference |
*Adjusted for maternal age, parity, and early pregnancy body mass index.