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Table 4 Preliminary main effect model based on multiple logistic regression

From: Factors associated with severe maternal morbidity in Kelantan, Malaysia: A comparative cross-sectional study

Variable Adjusted OR a (95 % CI b) LR statc P value
Parity 1.0 (0.87, 1.11) 0.11 0.744
Age
 <35 years 1.0   18.36 <0.001
 ≥35 years 2.6 (1.67, 4.07)   
Education level
 Nil and Primary 1.0   5.06 0.080
 Secondary 0.9 (0.33, 2.68)   
 Tertiary 1.7 (0.54, 5.08)   
Occupation
 Unemployed 1.0   3.49 0.322
 Self-employed 0.8 (0.36, 1.59)   
 Support group 0.9 (0.56, 1.39)   
 Professional 1.5 (0.83, 2.83)   
Comorbidity
 Absent 1.0   1.01 0.316
 Present 1.4 (0.72, 2.71)   
h/o caesarean section
 Absent 1.0   2.40 0.121
 Present 0.6 (0.35, 1.13)   
Past pregnancy complications
 Absent 1.0   3.92 0.048
 Present 1.7 (1.00, 2.79)   
BMI at booking (kg/m2)
 Normal 1.0   5.22 0.156
 Underweight 0.7 (0.35, 1.42)   
 Overweight 1.2 (0.76, 1.95)   
 Obese 1.6 (0.94, 2.60)   
Antenatal care visits
 Optimum (≥8 visits) 1.0   0.89 0.345
 Suboptimum (<7 visits) 1.4 (0.68, 3.03)   
Mode of delivery
 Vaginal delivery 1.0   106.07 <0.001
 Caesarean section 6.8 (4.68, 10.01)   
Period of gestation
 Term (≥37 weeks) 1.0   17.82 <0.001
 Preterm (<37 weeks) 3.4 (1.87, 6.32)   
Referral status
 Not referred 1.0   27.06 <0.001
 Referred 2.7 (1.87, 3.97)   
  1. Note. BMI = body mass index
  2. aAdjusted odds ratio
  3. bConfidence interval
  4. cLog - likelihood ratio statistic