Table 2

Reported prevalence of sexual risk behaviours and adverse sexual health outcomes in relation to substance use behaviour among young people, by gender

Of those reporting
Per cent (95% CI) to reportNo substance use behaviourBinge drinking (weekly), onlyDrug use (past 4 weeks),* onlyMultiple (both) behaviours*p Value
Men
No condom used at first sex with 1+ new partner(s), last year<0.0001
 Per cent (95% CI)18.5% (15.9 to 21.4)31.2% (25.1 to 37.9)35.1% (27.9 to 43.1)47.9% (38.8 to 57.1)
 OR† (95% CI)1.002.00 (1.38 to 2.88)2.39 (1.64 to 3.48)4.05 (2.71 to 6.05)
 Denominators‡§1014, 725244, 180193, 136128, 94
Just/recently met last partner at first sex<0.0001
 Per cent (95% CI)22.9% (19.7 to 26.5)39.9% (33.3 to 46.8)34.7% (27.7 to 42.4)39.2% (30.2 to 48.9)
 OR (95% CI)1.002.23 (1.59 to 3.12)1.79 (1.22 to 2.62)2.17 (1.40 to 3.35)
 Denominators811, 594240, 178189, 133128, 94
EC¶ use with a partner, last year<0.0001
 Per cent (95% CI)3.6% (2.6 to 4.9)10.1% (6.6 to 15.1)9.8% (5.6 to 16.8)13.9% (8.7 to 21.6)
 OR (95% CI)1.003.00 (1.69 to 5.31)2.91 (1.47 to 5.73)4.31 (2.34 to 7.97)
 Denominators1021, 731245, 181195, 137129, 95
STI diagnosis,** past 5 years<0.0001
 Per cent (95% CI)3.5% (2.5 to 5.0)9.0% (5.7 to 13.9)9.9% (5.8 to 16.6)13.5% (8.0 to 21.9)
 OR (95% CI)1.002.68 (1.46 to 4.92)3.00 (1.51 to 5.96)4.24 (2.17 to 8.28)
 Denominators1025, 733244, 180195, 134129, 95
Ever experienced attempted non-volitional sex0.1499
 Per cent (95% CI)3.6% (2.6 to 5.1)2.3% (0.9 to 5.4)7.5% (4.1 to 13.5)4.3% (1.6 to 11.1)
 OR (95% CI)1.000.62 (0.24 to 1.58)2.15 (1.02 to 4.51)1.20 (0.41 to 3.48)
 Denominators1019, 730242, 179194, 134127, 92
Women
No condom used at first sex with 1+ new partner(s), last year<0.0001
 Per cent (95% CI)21.1% (18.9 to 23.3)41.0% (33.6 to 48.8)30.0% (22.4 to 39.0)47.6% (34.3 to 61.4)
 OR† (95% CI)1.002.60 (1.87 to 3.63)1.61 (1.06 to 2.44)3.41 (1.96 to 5.93)
 Denominators‡§1563, 878210, 117130, 7266, 35
Just/recently met last partner at first sex<0.0001
 Per cent (95% CI)18.0% (15.7 to 20.5)30.9% (24.6 to 38.0)34.6% (25.6 to 44.8)45.5% (32.3 to 59.3)
 OR (95% CI)1.002.04 (1.43 to 2.91)2.42 (1.53 to 3.82)3.81 (2.17 to 6.69)
 Denominators1322, 740209, 117128, 7165, 34
EC¶ use with a partner, last year0.0199
 Per cent (95% CI)4.9% (3.8 to 6.4)9.1% (5.3 to 15.2)9.1% (4.7 to 16.6)12.0% (5.5 to 24.3)
 OR (95% CI)1.001.94 (1.05 to 3.56)1.92 (0.92 to 4.00)2.63 (1.09 to 6.32)
 Denominators1545, 868211, 118129, 7166, 35
STI diagnosis,** past 5 years<0.0001
 Per cent (95% CI)9.2% (7.6 to 11.0)18.9% (13.8 to 25.4)24.8% (16.9 to 34.9)21.7% (12.6 to 34.9)
 OR (95% CI)1.002.32 (1.52 to 3.53)3.27 (1.94 to 5.51)2.75 (1.43 to 5.30)
 Denominators1573, 884211, 118131, 7266, 35
Ever had an abortion <0.0001
 Per cent (95% CI)6.9% (5.7 to 8.4)9.6% (6.0 to 14.9)20.8% (13.9 to 30.0)17.7% (9.7 to 30.2)
 OR (95% CI)1.001.42 (0.83 to 2.42)3.53 (2.11 to 5.90)2.90 (1.44 to 5.83)
 Denominators1588, 892210, 118132, 7366, 35
Ever experienced attempted non-volitional sex<0.0001
Per cent (95% CI)15.1% (13.2 to 17.2)20.1% (14.4 to 27.3)38.7% (29.5 to 48.8)29.6% (19.4 to 42.8)
OR (95% CI)1.001.42 (0.92 to 2.17)3.55 (2.28 to 5.51)2.36 (1.33 to 4.18)
Denominators1556, 875205, 115126, 6964, 34

  • The denominator for this variable is all 16-24 year olds who report ever having had heterosexual sex, by gender.

  • †ORs are crude (unadjusted) ORs.

  • ‡Unweighted, weighted denominators.

  • §Denominators may vary due to missing data/non-response.

  • ¶Emergency contraception (EC).

  • **Excludes thrush.

  • STI, sexually transmitted infection.