ORs of maternal risk factors for the delivery of a small-for-gestational-age infant analysed separately by maternal weight status
| Crude | Adjusted | |||||
|---|---|---|---|---|---|---|
| Variables | SGA (n) | Non-SGA (n) | OR | 95% CI | OR | 95% CI |
| BMI<18.5 kg/m2 | ||||||
| Low GCT | ||||||
| No | 41 | 256 | 1.0 | Reference | 1.0 | Reference |
| Yes | 20 | 63 | 1.98 | 1.08 to 3.62 | 2.28 | 1.21 to 4.28 |
| PIH | ||||||
| No | 57 | 315 | 1.0 | Reference | 1.0 | Reference |
| Yes | 4 | 4 | 5.52 | 1.34 to 22.7 | 5.58 | 1.29 to 24.1 |
| Maternal height, cm | ||||||
| ≥150 | 49 | 294 | 1.0 | Reference | 1.0 | Reference |
| <150 | 12 | 25 | 2.88 | 1.36 to 6.11 | 3.88 | 1.73 to 8.72 |
| Thyroid disease | ||||||
| No | 60 | 313 | 1.0 | Reference | 1.0 | Reference |
| Yes | 1 | 6 | 0.87 | 0.10 to 7.35 | 0.79 | 0.09 to 6.89 |
| Teenage pregnant woman | ||||||
| No | 59 | 306 | 1.0 | Reference | 1.0 | Reference |
| Yes | 2 | 13 | 0.79 | 0.17 to 3.63 | 1.00 | 0.20 to 4.90 |
| Tertiary perinatal care centre | ||||||
| No | 27 | 179 | 1.0 | Reference | 1.0 | Reference |
| Yes | 34 | 140 | 1.61 | 0.93 to 2.79 | 2.06 | 1.14 to 3.72 |
| 18.5 ≤BMI ≤25.0 kg/m2 | ||||||
| Low GCT | ||||||
| No | 105 | 989 | 1.0 | Reference | 1.0 | Reference |
| Yes | 29 | 202 | 1.35 | 0.87 to 2.09 | 1.32 | 0.85 to 2.06 |
| PIH | ||||||
| No | 126 | 1155 | 1.0 | Reference | 1.0 | Reference |
| Yes | 8 | 36 | 2.03 | 0.93 to 4.48 | 1.96 | 0.89 to 4.34 |
| Maternal height, cm | ||||||
| ≥150 | 121 | 1088 | 1.0 | Reference | 1.0 | Reference |
| <150 | 13 | 103 | 1.13 | 0.62 to 2.08 | 1.09 | 0.59 to 2.01 |
| Thyroid disease | ||||||
| No | 131 | 1168 | 1.0 | Reference | 1.0 | Reference |
| Yes | 3 | 23 | 1.16 | 0.34 to 3.92 | 1.16 | 0.34 to 3.96 |
| Teenage pregnant woman | ||||||
| No | 131 | 1172 | 1.0 | Reference | 1.0 | Reference |
| Yes | 3 | 19 | 1.41 | 0.41 to 4.84 | 1.40 | 0.40 to 4.87 |
| Tertiary perinatal care centre | ||||||
| No | 69 | 635 | 1.0 | Reference | 1.0 | Reference |
| Yes | 65 | 556 | 1.41 | 0.41 to 4.83 | 1.07 | 0.75 to 1.54 |
| BMI>25.0 kg/m2 | ||||||
| Low GCT | ||||||
| No | 15 | 125 | 1.0 | Reference | 1.0 | Reference |
| Yes | 2 | 13 | 1.28 | 0.26 to 6.23 | 1.58 | 0.25 to 9.96 |
| PIH | ||||||
| No | 13 | 127 | 1.0 | Reference | 1.0 | Reference |
| Yes | 4 | 11 | 3.55 | 0.99 to 12.8 | 4.34 | 1.09 to 17.3 |
| Maternal height, cm | ||||||
| ≥150 | 1.0 | Reference | 1.0 | Reference | ||
| <150 | 6.74 | 1.88 to 24.2 | ||||
| Thyroid disease | ||||||
| No | 16 | 135 | 1.0 | Reference | 1.0 | Reference |
| Yes | 1 | 3 | 2.81 | 0.28 to 28.7 | 1.51 | 0.12 to 19.6 |
| Teenage pregnant woman | ||||||
| No | 16 | 137 | 1.0 | Reference | 1.0 | Reference |
| Yes | 1 | 1 | 8.5 | 0.51 to 143.6 | 14.3 | 0.73 to 281.7 |
| Tertiary perinatal care centre | ||||||
| No | 11 | 90 | 1.0 | Reference | 1.0 | Reference |
| Yes | 6 | 48 | 1.02 | 0.36 to 2.93 | 1.07 | 0.75 to 1.54 |
BMI, body mass index; GCT, glucose challenge test result; PIH, pregnancy-induced hypertension; SGA, small for gestational age.