Table 3 Associated factors for severe maternal morbidity using simple logistic regression
Variable | Crude OR a | (95Â % CI b) | Wald statc | P value |
|---|---|---|---|---|
Parity | 1.1 | (1.02, 1.18) | 5.91 | 0.015 |
Age | ||||
 <35 years | 1.0 |  | 29.00 | <0.001 |
 ≥35 years | 2.6 | (1.83, 3.78) |  |  |
Education level | ||||
 Nil and Primary | 1.0 |  | 3.93 | 0.141 |
 Secondary | 0.8 | (0.36, 1.67) |  |  |
 Tertiary | 1.1 | (0.49, 2.36) |  |  |
Occupation | ||||
 Unemployed | 1.0 |  | 6.68 | 0.083 |
 Self-employed | 0.8 | (0.48, 1.47) |  |  |
 Support group | 1.1 | (0.74, 1.51) |  |  |
 Professional | 1.8 | (1.10, 2.92) |  |  |
Comorbidity | ||||
 Absent | 1.0 |  | 5.19 | 0.023 |
 Present | 1.8 | (1.08, 2.98) |  |  |
h/o abortion | ||||
 Absent | 1.0 |  | 0.08 | 0.784 |
 Present | 1.0 | (0.66, 1.36) |  |  |
h/o caesarean section | ||||
 Absent | 1.0 | (1.42, 3.10) | 14.27 | <0.001 |
 Present | 2.1 |  |  |  |
Past pregnancy complications | ||||
 Absent | 1.0 |  | 20.62 | <0.001 |
 Present | 2.5 | (1.68, 3.87) |  |  |
Booking | ||||
 Early (≤12 weeks) | 1.0 |  | 0.09 | 0.763 |
 Late (>12 weeks) | 0.96 | (0.71, 1.28) |  |  |
BMI at booking (kg/m2) | ||||
 Normal | 1.0 |  | 35.44 | <0.001 |
 Underweight | 0.6 | (0.32, 1.02) |  |  |
 Overweight | 1.6 | (1.09, 2.29) |  |  |
 Obese | 2.6 | (1.74, 3.86) |  |  |
Antenatal care visits | ||||
 Optimum (≥8 visits) | 1.0 |  | 8.60 | 0.003 |
 Suboptimum (<7 visits) | 2.3 | (1.30, 4.13) |  |  |
Mode of delivery | ||||
 Vaginal delivery | 1.0 |  | 207.24 | <0.001 |
 Caesarean section | 10.6 | (7.44, 14.96) |  |  |
Period of gestation | ||||
 Term (≥37 weeks) | 1.0 |  |  | <0.001 |
 Preterm (<37 weeks) | 7.3 | (4.28, 12.31) | 72.95 |  |
Referral status | ||||
 Not referred | 1.0 |  | 111.27 | <0.001 |
 Referred | 5.3 | (3.81, 7.24) |  |  |