Table 2 binary regression of the factors associated with preterm delivery
From: Folic acid level and preterm birth among Sudanese women
| Variables | OR | 95% CI | P |
|---|---|---|---|
| Age, years | 1.03 | 0.94–1.13 | 0.485 |
| Parity | 0.93 | 0.72–1.20 | 0.589 |
| Education < secondary level | 1.26 | 0.68–2.31 | 0.454 |
| Housewives | 0.78 | 0.29–2.11 | 0.633 |
| History of miscarriage | 0.84 | 0.27–2.57 | 0.768 |
| Lack of antennal care | 1.40 | 0.62–3.17 | 0.415 |
| Body mass index, k/m2 | 0.95 | 0.84–1.08 | 0.503 |
| Hemoglobin level, g/dl | 0.78 | 0.45–1.34 | 0.373 |
| Interpregnancy interval, months | 1.06 | 1.00–1.12 | 0.049 |
| Folic acid level | 0.64 | 0.53–0.77 | < 0.001 |