A. Uni-variate regression analysis for perinatal mortality | |||||
---|---|---|---|---|---|
Variables | Category | Mortality (%)* | OR | 95% CI | P values |
Gender | Male | 0.4 | 1.154 | 0.898-1.481 | 0.262 |
 | Female | 0.4 |  |  |  |
Multi-births | No | 0.4 | 3.984 | 2.426-6.543 | <0.001 |
 | Yes | 1.5 |  |  |  |
Congenital anomalies | No | 0.3 | 74.260 | 54.067-101.996 | <0.001 |
 | Yes | 19.2 |  |  |  |
Pregnancy complications | No | 0.4 | 2.496 | 1.844-3.377 | <0.001 |
 | Yes | 0.9 |  |  |  |
Birthweight (grams) | ≥2500 | 0.2 | 57.700 | 44.478-74.852 | <0.001 |
 | <2500 | 8.8 |  |  |  |
Gestational age (weeks) | ≥37 | 0.1 | 61.782 | 47.019-81.180 | <0.001 |
 | <37 | 7.6 |  |  |  |
Maternal education (years) | ≥10 | 0.2 | 1.888 | 1.247-2.860 | 0.002 |
 | <10 | 0.5 |  |  |  |
Maternal age (years) | <35 | 0.4 | 1.743 | 1.212-2.506 | 0.002 |
 | ≥35 | 0.7 |  |  |  |
Amniotic contamination | No | 0.2 | 8.374 | 6.454-10.864 | <0.001 |
 | Yes | 1.6 |  |  |  |
Amniotic fluid volume | Normal | 0.3 | 4.894 | 3.661-6.542 | <0.001 |
 | Abnormal | 1.5 |  |  |  |
B. Multi-variate regression analysis for perinatal mortality | |||||
 | 95% CI | ||||
Variables | Reference** | OR | Lower | Upper | P values |
Gender | Male | 1.240 | 0.896 | 1.715 | 0.194 |
Multi-births | No | 2.396 | 1.196 | 4.799 | 0.014 |
Congenital anomalies | No | 35.200 | 20.304 | 61.026 | <0.001 |
Pregnancy complications | No | 1.900 | 1.215 | 2.969 | 0.005 |
Birthweight (grams) | ≥2500 | 5.397 | 3.458 | 8.442 | <0.001 |
Gestational age (weeks) | ≥37 | 32.305 | 20.463 | 50.998 | <0.001 |
Education years | ≥10 | 1.789 | 1.058 | 3.027 | 0.030 |
Maternal age (years) | <35 | 1.133 | 0.694 | 1.847 | 0.618 |
Amniotic contamination | No | 10.995 | 7.824 | 15.452 | <0.001 |
Amniotic fluid volume | Normal | 2.354 | 1.583 | 3.502 | <0.001 |