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Table 5 Logistic regression analyses of relationships between sex related behaviour and individuals' demographics and substance use behaviour

From: Sexual uses of alcohol and drugs and the associated health risks: A cross sectional study of young people in nine European cities

  Five or more partners Sex without a condom Sex without any birth control Paid for sex Exchanged sex for drugs Had an STI test Had regretted sex after alcohol or drugs
  AOR 95%CI AOR 95%CI AOR 95%CI AOR 95%CI AOR 95%CI AOR 95%CI AOR 95%CI
Age        
   26–35 (Ref)       *** **
   21–25       0.41 0.27,0.61 2.26 1.28,3.98
   16–20       0.88 0.61,1.27 1.38 0.77,2.46
Gender        
   Female (Ref) **    ***    
   Male 1.77 1.25,2.52    5.60 2.67,11.73    
Relationship Status        
   Not single (Ref) *** ***   **    **
   Single 2.30 1.60,3.31 0.58 0.44,0.77   2.43 1.30,4.53    1.80 1.23,2.64
Sexuality        
   Heterosexual (Ref) ***     ** ** **
   Other 4.29 2.81,6.56     4.06 1.44,11.42 1.99 1.35,2.93 2.05 1.30,3.23
Been drunk in last four weeks        
   No (Ref) *       
   Yes 1.59 1.03,2.46       
Cannabis use        
   Never used (Ref)   * *     *
   Experimented   1.19 0.77,1.85 1.45 0.94,2.24     2.69 1.26,5.73
   Ex user   1.82 1.15,2.89 1.70 1.11,2.60     2.16 1.01,4.59
   Occasional user   1.59 0.95,2.66 1.31 0.80,2.13     2.22 0.97,5.09
   Regular user   1.75 1.16,2.65 1.86 1.24,2.76     3.29 1.67,6.48
Cocaine use        
   Never used (Ref) ***   ** **   **  
   Experimented 1.42 0.84,2.40   1.56 1.04,2.34 1.77 0.75,4.20   1.17 0.76,1.82  
   Ex user 1.50 0.74,3.02   1.32 0.77,2.27 3.56 1.45,8.73   2.13 1.22,3.69  
   Occasional user 2.02 1.11,3.68   1.32 0.78,2.22 1.44 0.46,4.50   1.83 1.10,3.07  
   Regular user 5.65 3.12,10.23   2.71 1.61,4.55 5.13 2.22,11.87   2.47 1.50,4.09  
Ecstasy use        
   Never used (Ref)        **
   Experimented        2.12 1.22,3.69
   Ex user        2.66 1.47,4.83
   Occasional user        2.10 1.14,3.87
   Regular user        2.77 1.44,5.35
Country        
   Portugal (Ref) *** *** *** **   ***  
   Spain 0.40 0.17,0.95 1.42 0.79,2.55 0.54 0.30,0.97 2.59 0.62,10.80   0.77 0.42,1.42  
   Italy 1.05 0.50,2.18 1.80 0.99,3.28 0.92 0.53,1.59 2.21 0.51,9.49   0.69 0.38,1.26  
   Greece 1.01 0.51,1.99 1.04 0.64,1.71 1.66 1.02,2.71 7.39 2.05,26.65   0.83 0.48,1.42  
   Slovenia 0.43 0.18,1.03 3.76 1.98,7.14 1.15 0.68,1.95 0.52 0.05,5.19   0.34 0.17,0.65  
   Czech Republic 0.96 0.48,1.93 3.81 1.98,7.31 0.65 0.39,1.09 1.27 0.24,6.55   0.43 0.23,0.80  
   Austria 2.36 1.23,4.54 1.34 0.78,2.28 0.42 0.25,0.73 6.10 1.63,22.83   1.68 0.97,2.89  
   Germany 1.41 0.72,2.75 2.65 1.43,4.90 0.50 0.29,0.87 0.92 0.15,5.77   1.08 0.62,1.88  
   UK 0.40 0.19,0.88 1.06 0.63,1.81 0.42 0.24,0.72 1.87 0.43,8.11   0.66 0.38,1.16  
  1. * p < .05; ** p < .01; *** p < .001; ns = not significant; AOR = Adjusted Odds Ratio; 95%CI = 95% Confidence Interval; Ref = Reference Category.
  2. Note All analyses limited to those who have had sex in last 12 months. Backward conditional logistic regression was utilised with non-significant factors being removed from the final model. Frequency of alcohol use was an independent variable in all analyses but was not significantly related to any dependents and therefore is not shown above.