Table 2.
Univariable analyses of associations between maternal weight indicators and risk of IDA
| Maternal weight | Test IDA | Composite IDA | ||||||
|---|---|---|---|---|---|---|---|---|
| Test IDA | Non-IDA | OR (95% CI) | P | Composite IDA | Non-IDA | OR (95% CI) | P | |
| Prepregnancy BMI | ||||||||
| Underweight | 311 (20.53) | 1716 (16.72) | 1.22 (1.07–1.40) | 0.004 | 765 (19.54) | 1263 (16.05) | 1.22 (1.11–1.35) | <0.001 |
| Normal | 1092 (72.08) | 7383 (71.92) | Reference | – | 2805 (71.65) | 5671 (72.09) | Reference | – |
| Overweight | 104 (6.86) | 1029 (10.02) | 0.68 (0.55–0.84) | <0.001 | 321 (8.20) | 812 (10.32) | 0.80 (0.70–0.92) | 0.001 |
| Obese | 8 (0.53) | 137 (1.33) | 0.39 (0.19–0.81) | 0.011 | 24 (0.61) | 121 (1.54) | 0.40 (0.26–0.62) | <0.001 |
| Rate of GWG (kg/week) | 0.36 (0.28–0.44) | 0.32 (0.22–0.42) | 3.89 (2.88–5.26) | <0.001 | 0.35 (0.27–0.44) | 0.31 (0.21–0.42) | 4.47 (3.56–5.62) | <0.001 |
Data are presented as n (%). IDA: Iron deficiency anemia; BMI: Body mass index; OR: Odds ratio; CI: Confidence interval; GWG: Gestational weight gain; –: Not applicable.