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Table 4 Chi2 associations between condom use at last intercrouse and sociodemographics by gender, and adjusted odds ratios (95% confidence intervals) for the association between non-condom use at last intercourse and sociodemographic and lifestyle characteristics by gender

From: Sexual intercourse, age of initiation and contraception among adolescents in Ireland: findings from the Health Behaviour in School-aged Children (HBSC) Ireland study

  Chi2 association between condom use and sociodemographic characteristics Adjusted odds ratios (95% confidence intervals) for the association between non-condom use and sociodemographic and lifestyle characteristics
  Boys (n = 619) % (n) Girls (n = 439) % (n) Boys (n = 459) Girls (n = 349)
  Condom use Non-condom use Condom use Non-condom use (EXP B) OR 95% C.I. for EXP (B) (EXP B) OR 95% C.I. for EXP (B)
(n = 489) (n = 130) (n = 351) (n = 88)
Age
 15 years 71.6 (174)*** 28.4 (69) 77.2 (105) 22.8 (31) 0.669* 0.466–0.961 0.964 0.686–1.353
 16 years 83.2 (163) 16.8 (33) 85.2 (132) 14.8 (23)     
 17 years 82.6 (128) 17.4 (27) 77.4 (96) 22.6 (28)     
 18 years 96.0 (24) 4.0 (1) 75.0 (5.1) 25.0 (6)     
Social Class (SES)
 Low 85.5 (65) 14.5 (11) 82.4 (56) 17.6 (12) 1.368 0.611–3.063 0.681 0.237–1.960
 Middle 78.7 (174) 21.3 (47) 76.4 (120) 23.6 (37) 1.684 0.804–3.527 1.445 0.543–3.846
 High 81.7 (161) 18.3 (36) 84.8 (123) 15.2 (22) 1(ref)   1(ref)  
Family affluence (FAS)
 Low 80.0 (60) 20.0 (15) 73.3 (44) 26.7 (16) 1(ref)   1(ref)  
 Middle 79.4 (201) 20.6 (52) 82.2 (152) 17.8 (33) 1.224 0.709–2.113 0.836 0.418–1.672
 High 81.1 (202) 18.9 (47) 80.0 (340) 20.0 (36) 0.392a 0.139–1.100 0.952 0.371–2.441
Urban/rural status
 Urban 81.0 (315) 19.0 (74) 80.0 (228) 20.0 (57) 1(ref)   1(ref)  
 Rural 75.7 (174) 24.3 (56) 79.9 (123) 20.1 (31) 1.164 0.606–2.235 0.625 0.302–1.292
Traveller statusb
 Traveller 71.4 (20) 28.6 (8) 50.0 (5)* 50.0 (5) 1(ref)   1(ref)  
 Non-traveller 79.8 (466) 20.2 (118) 80.9 (342) 19.1 (81) 0.709 0.208–2.418 .076* 0.010–0.556
Disability/Chronic illness (D/CI)         
 D/CI 74.8 (107) 25.2 (36) 84.8 (89) 15.2 (16) 1(ref)   1(ref)  
 No D/CI 80.3 (375) 19.7 (92) 78.6 (257) 21.4 (70) 0.716 0.385–1.333 1.581 0.709–3.526
Household composition
 Living with both parents 80.8 (332) 19.2 (79) 81.2 (233) 18.8 (54) 1(ref)   1(ref)  
 Not living with both parents 75.9 (154) 24.1 (49) 77.5 (117) 22.5 (34) 1.517 0.848–2.712 0.895 0.450–1.783
Lifestyle characteristics
 Positive lifestyle behaviours
  Frequency of physical activity      0.700** 0.541–0.907 0.931 0.666–1.302
  Active travel      1.022 0.796–1.312 0.722 0.541–1.101
  Eating breakfast      0.993 0.752–1.310 1.048 0.754–1.456
  Healthy food consumption      0.998 0.774–1.287 0.796a 0.612–1.035
  Health protective behaviour      0.688*** 0.566–0.836 0.796 0.617–1.234
 Negative lifestyle behaviours
  Alcohol involvement      1.009 0.809–1.260 1.049 0.751–1.465
  Cannabis involvement      0.995 0.834–1.187 1.202 0.921–1.569
  Unhealthy food from parents      0.893 0.669–1.191 0.923 0.690–1.234
  Tobacco involvement      0.932 0.744–1.168 0.977 0.784–1.217
  Unhealthy food consumption      0.918 0.698–1.206 0.848 0.640–1.123
 Health
  Experience of health symptoms      1.002 0.716–1.402 1.060 0.792–1.419
  Quality of life      0.956 0.701–1.302 0.726a 0.522–1.010
  Medication for physical symptoms      1.143 0.886–1.475 1.243a 0.961–1.608
  Medication for psychological symptoms      1.087 0.893–1.324 1.254* 1.025–1.533
Socio-cultural environment
 Communication with friends      0.845 0.659–1.082 0.906 0.630–1.302
 Sense of community      1.044 0.817–1.334 1.048 0.769–1.426
 Poor neighbourhood environment      1.052 0.847–1.306 0.876 0.620–1.239
 Bullying others      0.839a 0.698–1.007 0.975 0.703–1.353
 Music and drama      0.965 0.674–1.382 1.077 0.812–1.430
 Being bullied      1.126 0.886–1.432 0.786a 0.590–1.047
 Club or team activities      0.965 0.750–1.241 1.019 0.725–1.432
 Parental communication      1.075 0.761–1.518 0.875 0.648–1.180
 Health check ups      0.925 0.718–1.192 1.074 0.746–1.547
  1. a≤.1, *p ≤ .05; ** p ≤ .01; *** p ≤ .001. Nagelkerke R2 = 0.305 (Boys), Nagelkerke R2 = 0.415 (Girls)
  2. bCaution must be taken when extrapolating from this finding given the small sample size