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Multivariate analysis of factors associated with anemia.
| Variables | OR (95% CI) | P value |
|---|---|---|
| Trimester | ||
| 1st | 1 | |
| 2nd | 2.2 (1.3, 3.6) | 0.004 |
| 3rd | 3.3 (2.0, 5.5) | <0.005 |
| Body mass index (kg/m²) | ||
| Underweight | 2.9 (1.02, 8.3) | 0.044 |
| Normal | 1 | |
| Overweight | 0.8 (0.6, 1.3) | 0.464 |
| Obese | 0.7 (0.5, 1.02) | 0.068 |
| History of previous surgeries | ||
| Yes | 1.6 (1.1, 2.2) | 0.016 |
| No | 1 | |
| Multi-vitamins intake in this pregnancy | ||
| Yes | 1.9 (1.3, 2.7) | <0.005 |
| No | 1 |
