Table 4 Preliminary main effect model based on multiple logistic regression
Variable | Adjusted OR a | (95Â % 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) |  |  |