Table 5: Cox estimation.

CPHM BCPHM JCPHM
Covariate (Reference) Level HR SE z P>z 95% CI HR SE z P>z 95% CI HR SE z P>z 95% CI
Age (Under 20 years old) 20 to 34 years old 0.140 0.075 -3.690 p < 0.001 [0.050; 0.398] 0.140 0.257 -1.070 0.283 [0.004; 5.064] 0.140 0.084 -3.260 0.001 [0.043; 0.457]
35 years old and above 0.171 0.098 -3.090 0.002 [0.056; 0.523] 0.171 0.313 -0.960 0.335 [0.005; 6.216] 0.171 0.111 -2.710 0.007 [0.048; 0.613]
Residence (Rural) Urban 1.003 0.258 0.010 0.990 [0.606; 1.660] 1.003 0.347 0.010 0.993 [0.510; 1.974] 1.003 0.342 0.010 0.993 [0.514; 1.956]
Antecedents (Not 1st newborn) 1st newborn 0.726 0.231 -1.010 0.313 [0.389; 1.353] 0.726 0.280 -0.830 0.406 [0.341; 1.545] 0.726 0.268 -0.870 0.386 [0.351; 1.498]
Abortion (Not aborted) Aborted once 1.671 0.686 1.250 0.211 [0.748; 3.735] 1.671 0.763 1.120 0.261 [0.683; 4.091] 1.671 0.722 1.190 0.234 [0.717; 3.897]
Aborted more than once 1.388 0.697 0.650 0.514 [0.519; 3.712] 1.388 0.756 0.600 0.548 [0.477; 4.038] 1.388 0.849 0.540 0.593 [0.418; 4.609]
Childbirth (Ventouse) Natural 0.533 0.422 -0.790 0.427 [0.113; 2.517] 0.533 3.473 -0.100 0.923 [0.000; 1.883x 105] 0.533 0.449 -0.750 0.456 [0.102; 2.786]
Surgery 0.759 0.590 -0.360 0.722 [0.166; 3.479] 0.759 4.946 -0.040 0.966 [0.000; 2.683x 105] 0.759 0.628 -0.330 0.739 [0.150; 3.850]
Gender (Female) Male 2.195 0.570 3.030 0.002 [1.319; 3.652] 2.195 0.672 2.570 0.010 [1.204; 3.999] 2.195 0.695 2.480 0.013 [1.179; 4.086]
Number (Singleton) Multiple 0.203 0.110 -2.950 0.003 [0.071; 0.585] 0.203 0.693 -0.470 0.640 [0.000; 162.000] 0.203 0.196 -1.650 0.099 [0.031; 1.353]
APGAR (Below 4/10) 4/10 to 6/10 0.167 0.085 -3.500 p < 0.001 [0.061; 0.455] 0.167 0.602 -0.500 0.620 [0.000; 197.300] 0.167 0.180 -1.660 0.098 [0.020; 1.392]
7/10 and above 0.022 0.010 -8.140 p < 0.001 [0.009; 0.055] 0.022 0.078 -1.070 0.284 [0.000; 24.091] 0.022 0.021 -3.880 p < 0.001 [0.003; 0.151]
Weight (Under 2500 g) 2500 g to 4500 g 0.221 0.088 -3.790 p < 0.001 [0.101; 0.482] 0.221 0.105 -3.180 0.001 [0.087; 0.560] 0.221 0.105 -3.170 0.002 [0.087; 0.562]
Above 4500 g 0.324 0.362 -1.010 0.313 [0.036; 2.892] 0.324 6.266 -0.060 0.954 [0.000; 9.150x 1015] 0.324 10.526 -0.030 0.972 [0.000; 1.450x 1027]
Head (Below 32 cm) 32 cm to 36 cm 0.285 0.110 -3.240 0.001 [0.133; 0.609] 0.285 0.119 -3.020 0.003 [0.126; 0.644] 0.285 0.117 -3.050 0.002 [0.127; 0.639]
Above 36 cm 0.106 0.114 -2.090 0.036 [0.013; 0.866] 0.106 2.091 -0.110 0.909 [0.000; 5.660x 1015] 0.106 3.780 -0.060 0.950 [0.000; 1.910x 1029]
Height (Below 36 cm) 46 cm to 54 cm 0.539 0.226 -1.480 0.140 [0.237; 1.225] 0.539 0.236 -1.410 0.158 [0.229; 1.270] 0.539 0.252 -1.320 0.186 [0.216; 1.346]
Above 54 cm 1.037 1.120 0.030 0.973 [0.125; 8.613] 1.037 20.074 0.000 0.998 [0.000; 3.080x 1016] 1.037 41.221 0.000 0.999 [0.000; 7.290x 1033]
Adjusted CPHM Adjusted BCPHM Adjusted JCPHM
Age (Under 20 years old) 20 to 34 years old 0.173 0.092 -3.310 0.001 [0.061; 0.488] - - - - - 0.181 0.096 -3.230 0.001 [0.064; 0.511]
35 years old and above 0.250 0.139 -2.490 0.013 [0.084; 0.745] - - - - - 0.248 0.139 -2.490 0.013 [0.083; 0.744]
Gender (Female) Male 2.150 0.550 2.990 0.003 [1.302; 3.549] 2.031 0.473 3.050 0.002 [1.287; 3.205] 1.778 0.506 2.020 0.043 [1.018; 3.106]
Number (Singleton) Multiple 0.176 0.091 -3.350 0.001 [0.064; 0.486] - - - - - - - - - -
APGAR (Below 4/10) 4/10 to 6/10 0.249 0.114 -3.030 0.002 [0.101; 0.612] - - - - - 0.516 0.330 -1.030 0.301 [0.147; 1.809]
7/10 and above 0.030 0.013 -8.220 p < 0.001 [0.013; 0.069] - - - - - 0.060 0.035 -4.820 p < 0.001 [0.019; 0.188]
Weight (Under 2500 g) 2500 g to 4500 g 0.176 0.062 -4.910 p < 0.001 [0.088; 0.352] 0.149 0.053 -5.380 p < 0.001 [0.075; 0.299] 0.209 0.082 -3.990 p < 0.001 [0.097; 0.451]
Above 4500 g 0.325 0.347 -1.050 0.293 [0.040; 2.636] 0.367 6.399 -0.060 0.954 [0.000; 2.450x 1014] 0.425 16.781 -0.020 0.983 [0.000; 1.840x 1033]
Head (Below 32 cm) 32 cm to 36 cm 0.196 0.064 -5.020 p < 0.001 [0.103; 0.370] 0.120 0.038 -6.700 p < 0.001 [0.065; 0.224] 0.198 0.077 -4.180 p < 0.001 [0.093; 0.423]
Above 36 cm 0.090 0.095 -2.290 0.022 [0.011; 0.706] 0.073 1.284 -0.150 0.882 [0.000; 7.170x 1013] 0.098 4.324 -0.050 0.958 [0.000; 3.360x 1036]
X2= 316.430, p < 0.001 X2= 210.070, p < 0.001 X2= 31.380, p < 0.001

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