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Table 2 Results from bivariate and multivariable regression models regarding the associations between reproductive history and outcomes.

From: Reproductive outcomes in adolescents who had a previous birth or an induced abortion compared to adolescents' first pregnancies

  n (%) Crude OR (95%-CI) AOR* (95%-CI)
Perinatal mortality    
Nulliparous 57 (0.7) 1.0 1.0
Previous birth 12 (1.5) 2.08 [1.11, 3.89] 2.35 [1.14, 4.86]
History of abortion 4 (1.9) 2.64 [0.95, 7.35] 1.83 [0.43, 7.68]
Neonatal mortality    
Nulliparous 16 (0.2) 1.0 1.0
Previous birth 7 (0.9) 4.31 [1.77, 10.5] 4.70 [1.60, 13.8]
History of abortion 1 (0.5) 2.33 [0.31, 17.7] 4.64 [0.58, 37.5]
Stillbirth    
Nulliparous 36 (0.5) 1.0 1.0
Previous birth 5 (0.6) 1.15 [0.41, 3.26] 1.09 [0.32, 3.71]
History of abortion 3 (1.5) 3.31 [1.01, 10.9] 1.23 [0.17, 9.15]
Very low birthweight    
Nulliparous 110 (1.4) 1.0 1.0
Previous birth 8 (1.0) 0.62 [0.27, 1.43] 0.53 [0.21, 1.34]
History of abortion 6 (2.8) 2.02 [0.81, 5.02] 2.74 [1.06, 7.09]
Preterm birth    
Nulliparous 275 (3.5) 1.0 1.0
Previous birth 32 (4.0) 1.13 [0.66, 1.88] 1.08 [0.58, 2.02]
History of abortion 17 (7.7) 2.21 [1.07, 4.58] 1.90 [0.77, 4.69]
  1. Acknowledgment: Crude OR = crude odds ratios, AOR = adjusted odds ratios, 95%-CI = 95% confidence intervals.
  2. *Adjusted for nationality, partner status, smoking, inadequate prenatal care and BMI.