Table 3 . Obstetrical (pregnancy) risk factors in the participants (n=2993) .

Variable	Frequency (%)
High parity	107 (3.5)
Preterm birth	204 (6.8)
Low birth weight	229 (7.6)
Stillbirth	35 (1.2)
Multiple pregnancy	57 (1.9)
Premature rupture of membrane	196 (6.5)
Preeclampsia/Eclampsia	194 (6.4)
Placenta previa	81 (2.7)
Placenta abruptio	34 (1.1)
Uterine atonia	37 (1.2)
Laceration	145 (4.8)
Retained placenta	22 (0.7)
Coagulopathy	13 (0.4)
Miscarriage	212 (7.0)
Ectopic pregnancy	14 (0.5)
Hydatiform mole	11 (0.4)
Gestational diabetes	219 (7.3)
At least one risk factor	1197 (40.0)