Table 2.
Obstetric factors | Cases, n (%) | Controls, n (%) | P-value | |
---|---|---|---|---|
History of abortion | Yes | 31 (14.2) | 42 (9.6) | 0.278 |
No | 187 (85.8) | 396 (90.4) | ||
Birth interval | <2 years | 105 (48.2) | 127 (29) | 0.000 |
≥2 years | 113 (51.8) | 311 (71) | ||
Number of ANC visits | None | 11 (5) | 13 (3) | 0.000 |
Fewer than four | 201 (92) | 387 (88.4) | ||
Four or more | 6 (2.8) | 38 (8.7) | ||
Hemoglobin level | <11 mg/dL | 78 (35.8) | 49 (11.2) | 0.000 |
≥11 mg/dL | 140 (64.2) | 389 (88.8) | ||
Labor status | Spontaneous | 187 (85.8) | 421 (96.1) | 0.000 |
Induced | 31 (14.2) | 17 (3.9) |
Abbreviation: ANC, antenatal care.