Multinomial logistic regression analyses predicting membership classifications: former TBI (lifetime but not in the past 12 months; no current hazardous drinking), recent TBI (in the past 12 months; no current hazardous drinking), hazardous drinking (never had TBI), former TBI with co-occurring hazardous drinking (no recent TBI), recent TBI with co-occurring hazardous drinking and base category (Ref.; no TBI or hazardous drinking) by conduct behaviours among adolescents in grades 9–12, Ontario, Canada, 2013, n=3130
| Former TBI (n=367) vs base category (n=2082) OR (95% CI) aOR (95% CI) | Recent TBI (n=104) vs base category (n=2082) OR (95% CI) aOR (95% CI) | Hazardous drinking (n=390) vs base category (n=2082) OR (95% CI) aOR (95% CI) | Former TBI and hazardous drinking (n=117) vs base category (n=2082) OR (95% CI) aOR (95% CI) | Recent TBI and hazardous drinking (n=70) vs base category (n=2082) OR (95% CI) aOR (95% CI) | |
|---|---|---|---|---|---|
| Taken the car** for a ride without the owner's permission | |||||
| F(5,94)=26.32*** | 2.14 (0.95 to 4.82) | 4.29 (1.35 to 13.65)* | 6.48 (4.02 to 10.43)*** | 17.92 (9.57 to 33.55)*** | 3.17 (0.97 to 10.39) |
| F(15,84)=14.52*** | 2.17 (0.97 to 4.88) | 4.27 (1.33 to 13.69)* | 5.61 (3.53 to 8.94)*** | 15.15 (7.77 to 29.56)*** | 2.93 (0.87 to 9.93) |
| Damaged something on purpose | |||||
| F(5,94)=14.57*** | 1.46 (0.89 to 2.38) | 6.21 (2.76 to 13.98)*** | 2.72 (1.65 to 4.49)*** | 5.50 (2.50 to 12.07)*** | 9.29 (4.44 to 19.44)*** |
| F(15,84)=21.56*** | 1.42 (0.87 to 2.33) | 6.13 (2.67 to 14.06)*** | 3.14 (1.86 to 5.29)*** | 6.16 (2.65 to 14.31)*** | 9.98 (4.65 to 21.44)*** |
| Sold marijuana or hashish | |||||
| F(5,94)=31.48*** | 2.51 (1.26 to 5.02)* | 10.16 (3.22 to 32.06)*** | 12.11 (6.86 to 21.36)*** | 29.29 (16.63 to 51.58)*** | 8.82 (3.25 to 23.97)*** |
| F(15,84)=18.00*** | 2.41 (1.74 to 4.95)* | 9.80 (3.21 to 29.94)*** | 13.35 (6.37 to 27.98)*** | 29.71 (14.88 to 59.31)*** | 9.02 (2.86 to 28.45)*** |
| Taken things worth $50 or less | |||||
| F(5,94)=19.02*** | 2.07 (1.31 to 3.25)** | 2.18 (1.06 to 4.45)* | 5.17 (3.18 to 8.39)*** | 6.92 (4.02 to 11.91)*** | 2.59 (0.78 to 8.54) |
| F(5,84)=20.06*** | 2.04 (1.30 to 3.22)** | 2.12 (1.02 to 4.12)* | 5.31 (3.43 to 8.22)*** | 6.69 (3.86 to 11.59)*** | 2.57 (0.78 to 8.49) |
| Stealing more than $50 | |||||
| F(5,94)=11.28*** | 1.62 (0.59 to 4.47) | 2.83 (0.86 to 9.33) | 7.77 (3.39 to 17.82)*** | 15.17 (5.93 to 38.84)*** | 8.13 (2.41 to 27/36)** |
| F(15,84)=13.97*** | 1.62 (0.58 to 4.54) | 2.75 (0.83 to 9.12) | 7.05 (2.96 to 16.81)*** | 12.88 (4.70 to 35.30)*** | 7.61 (2.24 to 25.87)** |
| Beat up, hurt anyone on purpose | |||||
| F(5,94)=18.08*** | 2.40 (1.22 to 4.75)* | 4.34 (1.84 to 10.20)** | 4.97 (2.71 to 9.10)*** | 9.61 (4.93 to 18.73)*** | 8.64 (2.98 to 25.04)*** |
| F(15,84)=17.64*** | 2.31 (1.15 to 4.64)* | 4.18 (1.77 to 9.84) ** | 5.98 (3.16 to 11.32)*** | 11.06 (5.26 to 23.24)*** | 9.40 (3.19 to 27.66) *** |
| Broken into a locked building other than one's own | |||||
| F(5,94)=20.49*** | 0.48 (0.18 to 1.30) | 1.92 (0.59 to 6.26) | 4.81 (2.31 to 10.05)*** | 8.70 (3.83 to 19.78)*** | 9.43 (2.84 to 31.34)*** |
| F(15,84)=10.72*** | 0.48 (0.18 to 1.26) | 1.85 (2.08 to 6.46) | 4.79 (2.08 to 11.05)*** | 8.01 (3.12 to 20.62)*** | 9.26 (2.59 to 33.13)*** |
| Carried a weapon such** as a gun or a knife | |||||
| F(5,94)=13.767*** | 5.13 (2.81 to 9.35)*** | 6.66 (2.75 to 16.10)*** | 5.67 (2.82 to 11.38)*** | 9.99 (4.85 to 20.57)*** | 9.21 (3.57 to 23.74)*** |
| F(1584)=29.00*** | 4.92 (2.69 to 8.97)*** | 6.40 (2.35 to 17.43)*** | 7.67 (3.95 to 14.90)*** | 12.73 (5.79 to 27.99)*** | 10.71(4.06 to 28.20)*** |
| Run away from home | |||||
| F(5,94)=13.67*** | 1.76 (0.99 to 3.13) | 3.67 (2.30 to 5.84)*** | 4.16 (2.56 to 6.77)*** | 4.85 (2.01 to 11.73)** | 4.49 (1.57 to 12.86)** |
| F(15,84)=12.60*** | 1.78 (0.99 to 3.16) | 3.78 (2.44 to 5.86)*** | 4.55 (2.82 to 7.33)*** | 5.79 (2.16 to 15.52)** | 4.74 (1.59 to 14.17)** |
| Set fire | |||||
| F(5,94)=14.58*** | 1.47 (0.94 to 2.29) | 3.04 (1.26 to 7.35)* | 4.00 (2.69 to 5.92)*** | 6.07 (3.03 to 12.16)*** | 3.54 (1.36 to 9.20)* |
| F(15,84)=24.63*** | 1.40 (0.92 to 2.14) | 2.96 (1.17 to 7.46)* | 5.34 (3.41 to 8.37)*** | 7.88 (3.77 to 16.47)*** | 4.02 (1.59 to 10.15)** |
| In a physical fight on school property | |||||
| F(5,94)=6.65*** | 2.36 (1.42 to 3.92)** | 6.59 (2.77 to 15.68)*** | 1.98 (0.96 to 4.11) | 4.91 (2.26 to 10.68)*** | 4.21 (1.55 to 11.46)** |
| F(15,84)=15.92*** | 2.25 (1.38 to 3.66)** | 6.78 (2.70 to 17.01)*** | 2.50 (1.14 to 5.49)* | 5.62 (2.28 to 13.83)*** | 4.77 (1.77 to 12.86)** |
| Bullied others at school | |||||
| F(5,94)=10.05*** | 1.52 (1.00 to 2.32) | 1.56 (0.54 to 4.50) | 2.12 (1.40 to 3.20)*** | 4.54 (2.62 to 7.85)*** | 3.81 (1.85 to 7.83)*** |
| F(5,84)=14.74*** | 1.48 (0.98 to 2.25) | 1.52 (0.52 to 4.49) | 2.50 (1.61 to 3.89)*** | 5.24 (2.93 to 9.37)*** | 4.11 (2.05 to 8.26)*** |
| Was threatened with a gun or a weapon (VICTIM) | |||||
| F(5,94)=9.20*** | 2.72 (1.42 to 5.24)** | 7.35 (2.39 to 22.60)** | 2.48 (1.27 to 5.29)* | 7.19 (2.18 to 16.25)*** | 6.72 (2.64 to 17.16)*** |
| F(5,84)=17.53*** | 2.61 (1.37 to 4.95)** | 7.12 (2.35 to 21.55)** | 2.90 (1.29 to 6.52)* | 7.97 (3.25 to 19.55)*** | 7.20 (2.87 to 18.08)*** |
| Been bullied at school (VICTIM) | |||||
| F(5,94)=3.33** | 1.63 (1.15 to 2.31)* | 2.04 (1.06 to 3.95)* | 1.24 (0.88 to 1.74) | 2.07 (1.00 to 4.30) | 2.44 (1.20 to 4.95)* |
| F(5,84)=9.41*** | 1.63 (1.16 to 2.28)* | 2.08 (1.12 to 3.87)* | 1.52 (1.08 to 2.15)* | 2.77 (1.34 to 5.71)** | 2.77 (1.37 to 5.57)** |
| Been bullied through the internet (VICTIM) | |||||
| F(5,94)=6.73*** | 1.55 (1.03 to 2.34)* | 3.22 (1.47 to 7.10)** | 1.48 (0.99 to 2.22) | 3.29 (1.80 to 6.02)*** | 2.64 (1.22 to 5.70)* |
| F(5,84)=12.34*** | 1.56 (1.03 to 2.38)* | 3.36 (1.48 to 7.64)** | 1.76 (1.18 to 2.64)** | 4.17 (2.18 to 7.98)*** | 2.94 (1.20 to 6.64)* |
F—design adjusted Wald F tests; ORs and adjusted ORs (aORs) were calculated using logistic regression.
aORs were evaluated while holding fixed values of the complexity of the design, sex and grade.
***p<0.001; ** p<0.01; *p<0.05.
TBI, traumatic brain injury.