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Table 3 Multiple Logistic Regression for factors associated with severe pre-eclampsia (N = 400)

From: Prevalence and risk factors associated with severe pre-eclampsia among postpartum women in Zanzibar: a cross-sectional study

Variable    95% C. I    95% C. I
OR P- value Lower Upper AOR P –value Lower Upper
Age
 15–20 4.16 0.01 1.44 12.06 3.84 0.04 1.04 14.21
 21–35 1.96 0.02 1.12 3.43 1.92 0.11 0.86 4.31
 36 and above (Ref)        
Residence
 Urban (Ref)        
 Rural 1.70 0.02 1.08 2.69 2.65 0.00 1.37 5.11
Education level
 No formal 1.3 0.83 0.12 14.21 1.76 0.70 0.10 30.45
 Primary 0.46 0.49 0.53 4.05 0.40 0.45 0.04 4.31
 Secondary 0.64   0.68 5.19 0.45 0.51 0.04 4.87
 Higher (Ref)        
Pregnancy from new partner/husband
 No (Ref)        
 Yes 3.409 < 0.00 2.13 5.47 7.56 < 0.00 3.88 14.72
Diabetes prior conception
 No (Ref)        
 Yes 14.7 0.02 1.69 127.34 55.83 0.00 5.06 615.87
High blood pressure in previous pregnancy
 No (Ref)        
 Yes 14.97 < 0.00 4.21 53.27 19.38 < 0.00 4.62 81.36
Multifetal gestation
 No (Ref)        
 Yes 3.86 0.01 1.40 10.64 7.62 0.01 2.01 28.84
High blood pressure prior conception
 No (Ref)        
 Yes 21 0.01 2.55 172.82 10.45 0.06 0.90 121.57
Family member with high blood pressure
 No (Ref)        
 Yes 6.13 < 0.00 3.56 10.54 6.45 < 0.00 3.22 12.92
Household member smoking
 No (Ref)        
 Yes 8.66 < 0.00 3.28 22.72 10.41 < 0.00 3.03 35.76
Paternal age (years)
  < 45 (Ref)        
  ≥ 45 2.23 0.01 1.27 3.89 2.40 0.04 1.04 5.52