Risk factors Wald OR 95% CI 95% CI P value
Age 0.000 0.0219 0 (+inf) 0.999
marital status 0.000 7.203 0 (+inf) 1
level of education 0.000 0.000 0 (+inf) 0.996
income 0.000 0.000 0 (+inf) 0.999
occupation 0.000 0.000 0 (+inf) 0.993
gestationnal age 0.000 1.269 0 (+inf) 1
Parity (No. of previous births 0.000 0.006 0 (+inf) 0.999
Induced abortion 0.000 0.000 0 (+inf) 0.999
Spontaneous abortion 0.000 0.000 0 (+inf) 0.999
premature 0.000 0.000 0 (+inf) 1
stillborn 0.000 2.45E+14 0 (+inf) 0.999
surgy 0.000 >1e40 0 (+inf) 0.996
Ectopic pregnancy 0.000 0.000 0 (+inf) 0.999
induce labour 0.000 8.15E+28 0 (+inf) 0.998
nombre de visite prenatal 0.000 2.468 0 (+inf) 1
used of contraceptive 0.000 9.57E+25 0 (+inf) 0.989
used of antibiotics 0.000 1.57E+31 0 (+inf) 0.998
fever 0.000 3.93E+35 0 (+inf) 0.992
diabetic 0.000 >1e40 0 (+inf) 0.997
HIV status 0.000 1.41E+32 0 (+inf) 0.998
Anaemia 0.000 2.22E+36 0 (+inf) 0.992
UTI during pregnancy 0.000 3.02E+39 0 (+inf) 0.998