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Table 3 Adjusted odds ratio (OR) and 95% confidence intervals for factors associated with young age at first intercourse (defined as ≤ 14 years), Germany 2010-2012

From: Sexual behavior and factors associated with young age at first intercourse and HPV vaccine uptake among young women in Germany: implications for HPV vaccination policies

Variable and category Age at first intercourse ≤ 14 vs. > 14 years
  Adjusted OR
  n % pos (95% CI) p
Current smoker
 No 539 11.7 1 -
 Yes 244 32.4 2.3 (1.5-3.6) <0.01
Educational status
 Low 46 41.3 1 -
 Medium 225 24.0 0.5 (0.2-1.1) 0.08
 High 510 13.3 0.3 (0.2-0.7) 0.01
Lifetime no. of sexual partners
 1 161 4.3 1 -
 2-3 200 11.5 2.5 (1.0-6.5) 0.05
 4-6 215 20.8 4.6 (1.9-11.2) <0.01
  ≥ 7 205 30.2 5.0 (2.0-12.4) <0.01
Bisexual expierience
 No 738 16.1 1 -
 Yes 37 51.3 3.2 (1.5-6.8) <0.01
Contraceptive pill (ever)
 No 62 9.7 1  
 Yes 723 18.9 2.7 (1.0-7.0) 0.05
Past pregnancy
 No 714 15.5 1 -
 Yes 70 44.3 3.0 (1.6-5.4) <0.01
  1. OR odds ratio; 95% CI 95% confidence interval.