Alcohol (at least ×1/mth) | 31 (89) | 29 (97) | 0.27 (0.03 to 2.53) | 34 (77)* | 39 (95) | 0.17 (0.04 to 0.85) | 65 (82) | 68 (96)** | 0.21 (0.06 to 0.75) |
Cigarettes (at least ×1/mth) | 11 (31) | 10 (33) | 0.92 (0.32 to 2.60) | 17 (39) | 11 (27) | 1.7 (0.69 to 4.31) | 28 (35) | 21 (30) | 1.31 (0.66 to 2.60) |
Cannabis (ever) | 8 (23) | 14 (47)* | 0.34 (0.12 to 0.98) | 8 (18) | 18 (44)** | 0.28 (0.11 to 0.76) | 16 (20) | 32 (45)** | 0.31 (0.15 to 0.64) |
Ecstasy (ever) | 1 (3) | 7 (23)* | 0.10 (0.01 to 0.84) | 1 (2) | 7 (17)* | 0.11 (0.01 to 0.96) | 2 (3) | 14 (20)*** | 0.11 (0.02 to 0.48) |
Heroin (ever) | 1 (3) | 4 (13) | 0.19 (0.02 to 1.81) | 0 | 3 (7) | | 1 (1) | 7 (10)* | 0.12 (0.01 to 0.97) |
Sexual intercourse (ever) | 26 (74) | 24 (80) | 0.72 (0.22 to 2.33) | 33 (75) | 34 (83) | 0.61 (0.21 to 1.79) | 59 (75) | 58 (82) | 0.66 (0.30 to 1.45) |
Sexual intercourse (at least ×1/wk) | 11 (31) | 12 (40) | 0.69 (0.25 to 1.91) | 15 (34) | 21 (51) | 0.49 (0.21 to 1.18) | 26 (33) | 33 (46) | 0.56 (0.29 to 1.09) |
Intimate relationship (ever) | 24 (69) | 17 (57) | 1.67 (0.60 to 4.61) | 30 (68) | 32 (78) | 0.60 (0.23 to 1.60) | 54 (68) | 49 (69) | 0.97 (0.49 to 1.94) |
Intimate relationship (now) | 15 (40) | 9 (30) | 1.75 (0.63 to 4.90) | 20 (45) | 23 (56) | 0.65 (0.28 to 1.53) | 35 (44) | 32 (45) | 0.97 (0.51 to 1.85) |
Pregnant (ever) | 2 (6) | 3 (10) | 0.55 (0.09 to 3.50) | 5 (11) | 5 (12) | 0.92 (0.25 to 3.46) | 7 (9) | 8 (11) | 0.77 (0.26 to 2.23) |
Baby | 1 (3) | 1 (3) | 0.85 (0.05 to 14.25) | 5 (11) | 2 (5) | 2.50 (0.46 to 13.67) | 6 (8) | 3 (4) | 1.86 (0.45 to 7.74) |
Police caution | 4 (11) | 5 (17) | 0.65 (0.16 to 2.66) | 3 (7) | 2 (5) | 1.42 (0.23 to 9.00) | 7 (9) | 7 (10) | 0.89 (0.30 to 2.67) |
Arrested | 3 (9) | 3 (10) | 0.84 (0.16 to 4.53) | 2 (5) | 1 (2) | 1.90 (0.16 to 21.84) | 5 (6) | 4 (6) | 1.13 (0.29 to 4.39) |
Convicted | 0 | 1 (3) | | 0 | 0 | | 0 | 1 (1) | |
Prison | 0 | 0 | | 0 | 0 | | 0 | 0 | |