| Covariate (reference) | Level | Hazard Ratio | Std. Err. | z | P > z | 95% Conf. Int. |
|---|---|---|---|---|---|---|
| Age (Under 20 years old) | 20 to 34 years old | 0.230 | 0.083 | -4.080 | p < 0.001 | [0.114; 0.466] |
| 35 years old and above | 0.324 | 0.129 | -2.840 | 0.005 | [0.149; 0.706] | |
| Residence (Rural) | Urban | 0.831 | 0.137 | -1.120 | 0.261 | [0.602; 1.147] |
| Antecedents (Not 1st newborn) | 1st newborn | 0.756 | 0.149 | -1.420 | 0.156 | [0.513; 1.113] |
| Abortion (Not aborted) | Aborted once | 1.393 | 0.396 | 1.170 | 0.244 | [0.798; 2.430] |
| Aborted more than once | 0.452 | 0.154 | -2.340 | 0.020 | [0.232; 0.880] | |
| Childbirth (Ventouse) | Natural | 0.736 | 0.408 | -0.550 | 0.580 | [0.249; 2.179] |
| Surgery | 0.921 | 0.499 | -0.150 | 0.880 | [0.319; 2.661] | |
| Gender (Female) | Male | 1.823 | 0.312 | 3.520 | p < 0.001 | [1.304; 2.549] |
| Number (Singleton) | Multiple | 0.324 | 0.106 | -3.430 | 0.001 | [0.170; 0.617] |
| APGAR (Below 4/10) | 4/10 to 6/10 | 0.214 | 0.065 | -5.090 | p < 0.001 | [0.118; 0.387] |
| 7/10 and above | 0.070 | 0.020 | -9.520 | p < 0.001 | [0.041; 0.121] | |
| Weight (Under 2500 g) | 2500 g to 4500 g | 0.231 | 0.063 | -5.340 | p < 0.001 | [0.135; 0.395] |
| Above 4500 g | 0.412 | 0.269 | -1.360 | 0.174 | [0.115; 1.479] | |
| Head (Below 32 cm) | 32 cm to 36 cm | 0.422 | 0.119 | -3.060 | 0.002 | [0.243; 0.734] |
| Above 36 cm | 0.246 | 0.187 | -1.840 | 0.065 | [0.055; 1.093] | |
| Height (Below 46 cm) | 46 cm to 54 cm | 0.917 | 0.285 | -0.280 | 0.781 | [0.499; 1.687] |
| Above 54 cm | 1.692 | 1.283 | 0.690 | 0.488 | [0.383; 7.476] |