Table 4.
Logistic regression analysis on the four dependent variables: miscarriage, preterm birth, neonatal mortality, and postpartum hemorrhage
| (1) | (2) | (3) | (4) | |||||
|---|---|---|---|---|---|---|---|---|
| Miscarriage | Preterm birth | Neonatal mortality | Postpartum hemorrhage | |||||
| OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | OR (95% CI) | P-value | |
| Wuchereria bancrofti | ||||||||
| Absence | Ref. | Ref. | Ref. | Ref. | ||||
| Presence | 0.7 (0.2–2.7) | 0.562 | 1.7 (0.3–8.9) | 0.544 | 2.8 (0.7–10.7) | 0.135 | 0.4 (0.1–1.6) | 0.187 |
| Hookworm | ||||||||
| Absence | Ref. | Ref. | Ref. | Ref. | ||||
| Presence | 0.7 (0.1–3.4) | 0.612 | 1.4 (0.2–11.0) | 0.739 | 1.3 (0.3–5.4) | 0.698 | 0.3 (0.1–1.8) | 0.199 |
| Missing data* | 4.2 (0.9–19.1) | 0.061 | 4.9 (0.6–38.9) | 0.134 | 1.5 (0.3–6.8) | 0.606 | 1.6 (0.4–6.9) | 0.494 |
| Age-group (years) | Not included† | |||||||
| < 30 | Ref. | Ref. | Ref. | |||||
| 30–35 | 1.6 (0.2–11.0) | 0.622 | 16.2 (2.4–108.3) | 0.004 | 0.3 (0.0–1.7) | 0.165 | ||
| 36–44 | 3.9 (0.5–28.9) | 0.185 | 29.9 (3.2–281.7) | 0.003 | 0.4 (0.0–3.0) | 0.350 | ||
| ≥ 45 | 14.9 (1.5–150.8) | 0.022 | 24.2 (2.5–233.4) | 0.006 | 0.5 (0.1–5.0) | 0.591 | ||
| Number of deliveries | ||||||||
| < 5 | Ref. | Ref. | Ref. | Ref. | ||||
| ≥ 5 | 1.0 (0.2–4.2) | 0.976 | 11.6 (1.9–70.5) | 0.008 | 1.8 (0.4–7.8) | 0.437 | 2.6 (0.5–13.5) | 0.250 |
| History of anthelmintic treatment | ||||||||
| No | Ref. | Ref. | Ref. | Ref. | ||||
| Yes | 0.4 (0.1–2.0) | 0.285 | 0.1 (0.01–1.5) | 0.106 | 0.2 (0.0–0.8) | 0.024 | 0.9 (0.2–3.7) | 0.894 |
| Missing data* | 0.9 (0.1–5.5) | 0.883 | 0.5 (0.1–4.7) | 0.555 | 0.3 (0.1–2.1) | 0.253 | 0.3 (0.1–2.0) | 0.226 |
| Number of observations‡ | 64 | 53 | 79 | 58 | ||||
OR = odds ratio; Ref. = reference category.
*
Missing data were included in the regression model as a categorical variable to improve convergence and number of participants.
†
Age could not be included in prematurity logistic regression because of convergence issue due to the relatively small number of participants.
‡
Number of observations are smaller than 82 because of missing information in the questionnaires administrated to women or missing data in parasitological results.