Table 1: Correlates of risky sexual behaviour during the past 12 months ().

Engaged in risky sexual behaviour+∧No ()Yes ()Unadjusted OR (95% CI), Adjusted OR (95% CI),
(%) (%)

Gender
 Female509 (74)179 (26)1.0
 Male324 (71)130 (29)1.14 (0.87, 1.49), 0.33
Age (years)
 16–19404 (70)176 (30)1.40 (1.08, 1.83), 0.011.54 (1.14, 2.07), <0.01
 20–29429 (76)133 (24)1.01.0
Postcode
 Metropolitan 533 (73)196 (27)1.0
 Rural/regional260 (72)100 (28)1.05 (0.79, 1.39), 0.76
Country of Birth
 Australia 769 (73)288 (27)1.12 (0.67, 1.87), 0.66
 Elsewhere63 (75)21 (25)1.0
Completed or undertaking post-high school education
 No411 (71)171 (29)1.30 (1.00, 1.69), 0.05
 Yes415 (76)133 (24)1.0
Live with parents
 No309 (75)511 (72)1.0
 Yes511 (72)201 (28)1.17 (0.89, 1.54), 0.27
Recreational income (per week)
 <A$80354 (77)108 (23)1.0
 ≥A$80459 (70)193 (30)1.38 (1.05, 1.81), 0.02
Consumed alcohol#
 No20 (83)4 (17)1.0
 Yes803 (73)300 (27)1.17 (0.89, 1.54), 0.27
Binge (≥6 drinks in a session)#*
 <weekly560 (79)151 (21)1.01.0
 ≥weekly238 (62)143 (38)2.23 (1.70, 2.93), <0.0012.13 (1.58, 2.88), <0.001
Currently smoke tobacco
 No575 (77)169 (23)1.0
 Yes256 (65)137 (35)1.82 (1.39, 2.38), <0.001
Used illicit drugs in past month
 No629 (77)191 (23)1.01.0
 Yes200 (64)111 (36)1.82 (1.37, 2.41), <0.0011.68 (1.22, 2.30), <0.01
Age first sex (years)
 ≤15219 (63)131 (37)2.09 (1.58, 2.76), <0.0011.70 (1.26, 2.31), <0.01
 >15577 (78)165 (22)1.01.0
Reported any same-sex partners#
 No747 (75)247 (25)1.0
 Yes50 (54)43 (46)2.60 (1.69, 4.01), <0.001
Discussed sexual health and/or contraception with GP#
 No482 (75)157 (25)1.01.58 (1.18, 2.11), <0.01
 Yes343 (70)147 (30)1.32 (1.01, 1.71), 0.041.0
Ever had STI test
 No559 (75)186 (25)1.0
 Yes270 (70)118 (30)1.31 (1.00, 1.72), 0.05

Risky sexual behaviour was defined as inconsistent condom use with new or casual partners during the past 12 months.
Among those who reported having ever had sex.
#During past 12 months.
*Among those who reported drinking alcohol during past 12 months.