Table 4.
The SGA odds ratio after confounding variables adjusted with PAPP-A<0.4 and β-hCG >3
| Variables | OR | SGA (birth weight<10th centile) | |
|---|---|---|---|
|
| |||
| 95% CI (lower–upper) | P | ||
| Pregnant woman’s age | 1.003 | 0.791–1.036 | 0.875 |
| Spouse’s age | 0.953 | 0.923–0.948 | 0.003 |
| Age difference between children | 0.879 | 0.687–1.124 | 0.305 |
| The birth weight of the previous child | 0.679 | 0.488–0.944 | 0.021 |
| Gestational diabetes | 0.402 | 0.256–0.630 | 0.001 |
| Pregnancy induce hypertension | 0.891 | 0.805–0.896 | 0.026 |
| urinary tract infections during pregnancy | 0.312 | 0.075–1.291 | 1.108 |
| Pregnancy weight gain | 1.064 | 1.036–1.094 | 0.001 |
| MoM PAPP-A <0.4 | 3.312 | 2.343–4.406 | 0.001 |
| MoM β-hCG >3 | 0.683 | 0.428–1.091 | 0.111 |
CI=Confidence interval; OR=Odds ratio; MoM=Multiples of the median; PAPP-A=Pregnancy-associated plasma Protein A; β-hCG=β-human-derived chorionic gonadotrophic; SGA=Small for gestational age