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Table 4 Association Between Maternal Age and Adverse Maternal Outcomes

From: The association of maternal age with adverse neonatal outcomes in Lusaka, Zambia: a prospective cohort study

Total ( N =11,501)      
   Crude Odds Ratio 95% CI Adjusted Odds Ratio 95% CI
Maternal Outcome Maternal Age
Maternal death 10-19 Non-estimable - Non-estimable -
20-24 1.00 (ref)  - 1.00 (ref)  -
25-34 1.41 (0.34, 5.9) 2.85 (0.57, 14.23)
35+ 1.21 (0.13, 11.61) 5.19 (0.32, 82.81)
Obstructed or prolonged labour 10-19 1.27 (.88, 1.83) 1.31 (0.89, 1.92)
20-24 1.00 (ref)  - 1.00 (ref)  -
25-34 0.94 (0.70, 1.27) 1.07 (0.75, 1.52)
35+ 1.00 (0.63, 1.59) 1.42 (0.76, 2.65)
Severe antepartum haemorrhage 10-19 0.45 (0.05, 3.89) Non-estimable -
20-24 1.00 (ref) - 1.00 (ref) -
25-34 2.22 (0.79, 6.22) 2.00 (0.61, 6.59)
35+ 2.89 (0.78, 10.79) 2.09 (0.31, 13.96)
Severe postpartum haemorrhage 10-19 1.36 (0.33, 5.71) 1.08 (0.2, 5.71)
20-24 1.00 (ref) - 1.00 (ref) -
25-34 2.56 (0.93, 7.04) 1.83 (0.5, 5.73)
35+ 3.62* (1.05, 12.52) 1.64 (0.32, 8.45)
Hypertension/pre-eclampsia 10-19 1.43 (0.88, 2.33) 1.52 (0.91, 2.53)
20-24 1.00 (ref)  - 1.00 (ref)  -
25-34 1.51* (1.04, 2.20) 1.70* (1.11, 2.61)
35+ 2.21** (1.35, 3.62) 3.01** (1.54, 5.89)
Breech/transverse or oblique lie 10-19 0.95 (0.33, 2.69) 0.99 (0.31, 3.15)
20-24 1.00 (ref)  - 1.00 (ref) -
25-34 2.21* (1.13, 4.30) 1.35 (0.63, 2.91)
35+ 3.03* (1.30, 7.02) 1.07 (0.34, 3.37)
Severe infection 10-19 0.76 (0.15, 3.75) 0.42 (0.05, 3.64)
20-24 1.00 (ref)  - 1.00 (ref)  -
25-34 1.0 (0.33, 2.96) 1.02 (0.30, 3.49)
35+ 3.0 (0.92, 9.90) 3.56 (0.62, 20.50)
Preterm labour 10-19 1.49 (0.84, 2.67) 1.23 (0.67, 2.27)
20-24 1.00 (ref)  - 1.00 (ref)  -
25-34 1.71* (1.09, 2.68) 2.11** (1.26, 3.52)
35+ 2.13* (1.17, 3.90) 2.78* (1.24, 6.21)
Preterm premature rapture of membrane (PPROM) 10-19 2.28 (0.80, 6.50) 2.11 (0.68, 6.51)
20-24 1.00 (ref)  - 1.00 (ref)  -
25-34 2.69* (1.15, 6.30) 2.03 (0.77, 5.34)
35+ 2.58 (0.82, 8.16) 1.41 (0.32, 6.27)
  1. *p<0.05, **p<0.01