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Table 5 Bivariable and multivariable analysis on determinants of pre-eclampsia women attending public health hospitals in Omo District for antenatal and delivery services, Southern Ethiopia, 2018 (n = 519)

From: Family history of chronic illness, preterm gestational age and smoking exposure before pregnancy increases the probability of preeclampsia in Omo district in southern Ethiopia: a case-control study

Variable Outcome variable COR-95% Confidence Interval AOR-95% Confidence Interval P-value
Pre-eclampsia Controls
Family History of hypertension
 No family history® 126(75.4%) 293(83.3%) 1:00 1:00
 1st degree relatives history 19(11.4%) 23(6.5%) 1.92(1.01–3.65) 2.11(1.06–4.21) 0.03
 2nd degree relatives history 22(13.2%) 36(10.2%) 1.42(0.80–2.51) 1.42(0.78–2.58) 0.26
Personel History of Preeclampsia
 Yes 24(14.4%) 34(9.7%) 1.6(0.89–2.74) 0.59(0.32–1.09) 0.09
 No® 143(85.6%) 318(90.3%) 1:00 1:00  
Family History of Diabetes Mellitus
 Yes 12(7.2%) 35(9.90%) 0.70(0.35–1.13) 2.35(1.07–5.20) 0.03
 No® 155(92.8%) 317(90.1%) 1:00 1:00  
Marital Status
 Married 161(96.4%) 325(92.3%) 2.23(0.90–5.51) 2.28(0.90–5.77) 0.08
 Unmarried® 6(3.6%) 27(7.7%) 1:00 1:00  
Gestational age
 Less than 37 weeks 115(68.9%) 201(57.3%) 1.7(1.13–2.45) 1.56(1.05–2.32) 0.03
 37 and Above weeks® 52(31.1%) 151(42.7%) 1:00 1:00
History of Smoking before pregnancy
 No® 96(57.5%) 216(61.4%)   1:00
 Passive smoker 64(38.3%) 132(37.5%) 1.09(0.74–1.60) 1.14(0.77–1.67) 0.51
 Active smoker 7(4.3%) 4(1.14%) 3.94(1.13–13.8) 4.16(1.12–15.4) 0.03
  1. Note:®-reference