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
| Â | 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) | ||||
| Â | 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) | Â | Â | Â | Â | Â | Â | Â | Â |
 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 |