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Table 2 Estimated proportion of girls from the WACHS that became pregnant as a teenager, became teenage mothers or who had an abortion as a teenager

From: Antecedents of teenage pregnancy from a 14-year follow-up study using data linkage

  Proportion who became pregnant as a teenager (n = 155) Proportion who became teenage mothers (n = 94) Proportion who had an abortion as a teenager (n = 72)
  % 95% CI % 95% CI % 95% CI
All girls in WACHS (n = 1,374) 10.5 8.3 - 13.0 6.9 5.0 - 9.3 4.2 3.1 - 5.4
Family type       
   Original 7.5 5.6 - 9.6 3.9 2.5 - 5.9 4.0 2.9 - 5.6
   Step/blended 16.8 10.5 - 25.7 12.1 7.0 - 19.5 5.5 2.7 - 10.7
   Sole-parent 19.6 12.1 - 30.1 17.0 9.6 - 27.8 4.0 2.2 - 7.2
Child's CBCL score - Aggressive &       
Delinquent (parent and teacher reported)       
   Aggressive and Delinquent 39.5 19.7 - 61.5 28.0 11.6 - 47.8 11.5 2.5 - 31.2
   Either Aggressive or Delinquent 17.5 9.4 - 27.5 13.7 6.6 - 23.2 3.8 0.8 - 11.1
   Neither Aggressive nor Delinquent 9.4 7.2 - 12.0 6.0 4.0 - 8.4 4.1 3.1 - 5.5
Child's CBCL score - total t score (parent reported)       
   Normal 9.8 7.5 - 12.7 6.3 4.3 - 9.1 4.1 3.0 - 5.4
   Abnormal 17.5 9.4 - 27.5 12.1 6.1 - 20.2 5.4 1.0 - 13.1
   Not stated 9.4 3.8 - 18.3 7.3 2.7 - 14.9 3.8 0.8 - 11.4
Child's CBCL score - total t score (teacher reported)       
   Normal 9.9 7.0 - 13.1 6.3 4.0 - 9.9 4.4 3.1 - 5.9
   Abnormal 23.3 14.9 - 34.6 15.8 9.0 - 25.2 7.9 2.4 - 16.3
   Not stated 8.1 5.6 - 11.8 5.7 3.5 - 9.0 2.7 1.2 - 5.0
Combined carer income       
   Low 15.7 11.2 - 20.8 12.3 8.1 - 17.1 4.3 2.5 - 6.5
   Medium 7.3 5.1 - 9.9 3.1 1.8 - 5.0 4.6 2.8 - 6.9
   High 6.6 3.9 - 11.0 2.7 0.9 - 6.0 4.3 2.0 - 8.0
Region       
   Metropolitan 9.6 6.8 - 12.8 6.8 4.4 - 10.0 3.2 2.1 - 4.8
   Non-Metropolitan 12.9 10.2 - 15.8 7.3 5.3 - 9.5 6.9 4.8 - 9.5
Primary carer was a smoker       
   Yes 14.6 10.9 - 19.5 10.5 7.2 - 14.7 5.0 2.6 - 8.6
   No 9.0 6.5 - 11.9 5.6 3.3 - 8.4 3.9 2.8 - 5.3
Highest school year completed by primary carer       
   Year 9 or lower 22.3 12.9 - 33.8 18.5 9.2 - 29.5 5.2 2.6 - 8.9
   Year 10 or higher 8.4 6.7 - 10.3 4.9 3.5 - 6.6 4.1 2.9 - 5.4
Girl's mother was a teenage mother       
   Yes 24.1 14.4 - 38.4 20.6 11.1 - 34.7 5.1 2.0 - 11.4
   No 9.8 7.7 - 12.4 6.2 4.3 - 8.6 4.2 3.1 - 5.5
Primary carer in receipt of government benefits       
   Yes 14.9 10.5 - 20.3 12.6 8.2 - 17.7 3.4 1.9 - 5.7
   No 7.7 6.0 - 9.8 3.4 2.4 - 4.9 4.7 3.3 - 6.3
Importance of religion for child's primary carer       
   Very important 6.3 3.7 - 10.7 4.7 2.5 - 7.9 2.0 0.6 - 5.6
   Reasonably important 12.2 7.5 - 18.5 8.9 4.5 - 15.2 3.7 2.2 - 5.6
   Not at all important 10.8 6.7 - 25.4 5.8 3.7 - 8.7 6.0 4.0 - 8.8
Child was breastfed       
   Yes 10.5 8.2 - 13.3 7.4 5.2 - 10.2 3.7 2.7 - 4.9
   No 9.6 5.6 - 15.1 4.1 1.7 - 7.7 6.9 3.3 - 12.1
Family functioning       
   Good 8.3 6.3 - 10.5 5.2 3.5 - 7.3 3.8 2.6 - 5.2
   Poor 19.5 9.6 - 34.6 13.5 3.6 - 29.8 6.0 2.7 - 11.9
Child's birth weight       
   Normal 10.5 8.2 - 13.1 7.2 5.2 - 9.8 3.9 3.0 - 5.1
   Low 8.3 3.1 - 17.3 2.9 0.6 - 8.3 6.5 1.7 - 15.0