Table 3 Mood, substance use, bullying and school connectedness in the development of self-harm for boys and girls
Boys | |||||||
|---|---|---|---|---|---|---|---|
Variable | Level | No self-harm thoughts at time 1 | Developed self-harm thoughts at time 2 | Adjusted OR* (95% CI) | Overall p-value | Adjusted OR* (95% CI) from MI | Multiple adjusted ORT (95% CI) |
Alcohol | Never/1 or 2x | 1399 | 88 | 1.0 | <0.001 | 1.0 | 1.0 |
2/4 + per mth | 277 | 32 | 2.26 (1.43, 3.57) | 2.09 (1.34, 3.28) | 1.56 (0.91, 2.67) | ||
Cannabis | Never used | 1556 | 103 | 1.0 | <0.001 | 1.0 | 1.0 |
Used | 119 | 18 | 2.84 (1.61, 4.99) | 2.59 (1.52, 4.41) | 2.24 (1.12, 4.48) | ||
Drugs | Never used | 1660 | 119 | 1.0 | 0.467 | 1.0 | 1.0 |
Used | 18 | 2 | 1.74 (0.39, 7.73) | 2.14 (0.55, 8.36) | 0.57 (0.11, 2.92) | ||
Bullied | Never/1 or 2x | 1609 | 107 | 1.0 | <0.001 | 1.0 | 1.0 |
2/3 + per mth | 72 | 14 | 3.40 (1.83, 6.32) | 3.11 (1.70, 5.67) | 1.82 (0.84, 3.94) | ||
Bullying others | Never | 1379 | 88 | 1.0 | 0.002 | 1.0 | 1.0 |
Regularly | 290 | 34 | 1.94 (1.27, 2.96) | 1.81 (1.17, 2.80) | 1.29 (0.79, 2.10) | ||
Peer attachment | Secure | 1392 | 88 | 1.0 | <0.001 | 1.0 | 1.0 |
Avoidant | 75 | 10 | 2.25 (1.12, 4.55) | 2.11 (1.06, 4.20) | 1.43 (0.67, 3.06) | ||
Anxious | 59 | 12 | 3.77 (1.93, 7.38) | 3.02 (1.57, 5.81) | 1.75 (0.79, 3.89) | ||
Baseline MFQ | 0 – 4 | 1481 | 83 | 1.0 | <0.001 | 1.0 | 1.0 |
5+ | 202 | 38 | 4.01 (2.63, 6.10) | 4.08 (2.78, 5.98) | 2.82 (1.71, 4.65) | ||
Baseline School connectedness | ≤24 | 182 | 26 | 1.0 | <0.001 | 1.0 | 1.0 |
25+ | 1502 | 96 | 0.41 (0.26, 0.66) | 0.41 (0.26, 0.64) | 0.55 (0.31, 0.95) | ||
Alcohol | Never/1 or 2x | 1536 | 73 | 1.0 | 0.053 | 1.0 | 1.0 |
2/4 + per mth | 295 | 21 | 1.68 (0.99, 2.86) | 1.60 (0.97, 2.63) | 1.29 (0.69, 2.41) | ||
Cannabis | Never used | 1698 | 81 | 1.0 | 0.022 | 1.0 | 1.0 |
Used | 132 | 12 | 2.16 (1.12, 4.17) | 2.17 (1.12, 4.19) | 1.21 (0.50, 2.89) | ||
Drugs | Never used | 1806 | 87 | 1.0 | <0.001 | 1.0 | 1.0 |
Used | 23 | 6 | 7.47 (2.84, 19.66) | 5.37 (1.97, 14.63) | 5.95 (1.75, 20.25) | ||
Bullied | Never/1 or 2x | 1726 | 76 | 1.0 | <0.001 | 1.0 | 1.0 |
2/3 + per mth | 109 | 18 | 4.28 (2.45, 7.50) | 3.66 (2.09, 6.42) | 2.42 (1.21, 4.86) | ||
Bullying others | Never | 1482 | 60 | 1.0 | <0.001 | 1.0 | 1.0 |
Regularly | 337 | 31 | 2.37 (1.51, 3.74) | 2.17 (1.39, 3.38) | 1.68 (0.99, 2.85) | ||
Peer attachment | Secure | 1491 | 60 | 1.0 | <0.001 | 1.0 | 1.0 |
Avoidant | 104 | 14 | 3.70 (1.99, 6.89) | 2.88 (1.59, 5.20) | 2.19 (1.07, 4.49) | ||
Anxious | 84 | 9 | 2.87 (1.37, 6.01) | 2.76 (1.32, 5.78) | 1.16 (0.47, 2.86) | ||
Baseline MFQ | 0 – 4 | 1533 | 53 | 1.0 | <0.001 | 1.0 | 1.0 |
5+ | 305 | 41 | 4.38 (2.85, 6.73) | 3.98 (2.71, 5.85) | 2.24 (1.29, 3.87) | ||
Baseline School connectedness | ≤24 | 238 | 28 | 1.0 | <0.001 | 1.0 | 1.0 |
25+ | 1603 | 66 | 0.33 (0.20, 0.52) | 0.32 (0.19, 0.54) | 0.58 (0.32, 1.06) | ||
Girls | |||||||
Variable | Level | No self-harm thoughts at time 1 | Developed self-harm thoughts at time 2 | Adjusted OR* (95% CI) | Overall p-value | Adjusted OR* (95% CI) from MI | Multiple adjusted OR T (95% CI) |
Alcohol | Never/1 or 2x | 1271 | 134 | 1.0 | 0.064 | 1.0 | 1.0 |
2/4 + per mth | 226 | 33 | 1.50 (0.98, 2.32) | 1.61 (1.06, 2.45) | 1.32 (0.80, 2.17) | ||
Cannabis | Never used | 1416 | 154 | 1.0 | 0.158 | 1.0 | 1.0 |
Used | 82 | 13 | 1.58 (0.84, 3.00) | 1.63 (0.86, 3.09) | 1.59 (0.74, 3.40) | ||
Drugs | Never used | 1485 | 167 | 1.0 | 0.541 | 1.0 | 1.0 |
Used | 16 | 1 | 0.53 (0.07, 4.08) | 0.87 (0.15, 5.08) | 0.23 (0.03, 2.03) | ||
Bullied | Never/1 or 2x | 1431 | 154 | 1.0 | 0.067 | 1.0 | 1.0 |
2/3 + per mth | 67 | 12 | 1.83 (0.96, 3.51) | 2.04 (1.14, 3.64) | 0.98 (0.43, 2.24) | ||
Bullying others | Never | 1350 | 149 | 1.0 | 0.700 | 1.0 | 1.0 |
Regularly | 148 | 18 | 1.11 (0.66, 1.87) | 1.27 (0.78, 2.07) | 0.59 (0.31, 1.10) | ||
Peer attachment | Secure | 1255 | 130 | 1.0 | 0.037 | 1.0 | 1.0 |
Avoidant | 100 | 17 | 1.76 (1.01, 3.07) | 1.87 (1.08, 3.22) | 1.07 (0.57, 1.99) | ||
Anxious | 63 | 11 | 1.84 (0.94, 3.62) | 2.44 (1.26, 4.73) | 1.13 (0.55, 2.31) | ||
Baseline MFQ | 0 – 4 | 1127 | 87 | 1.0 | <0.001 | 1.0 | 1.0 |
5+ | 377 | 81 | 3.36 (2.41, 4.70) | 3.67 (2.68, 5.04) | 3.30 (2.25, 4.84) | ||
Baseline School connectedness | ≤24 | 195 | 37 | 1.0 | <0.001 | 1.0 | 1.0 |
25+ | 1294 | 128 | 0.47 (0.31, 0.70) | 0.45 (0.31, 0.66) | 0.75 (0.46, 1.21) | ||
Alcohol | Never/1 or 2x | 1463 | 93 | 1.0 | 0.038 | 1.0 | 1.0 |
2/4 + per mth | 263 | 27 | 1.65 (1.03, 2.66) | 1.63 (1.06, 2.52) | 1.03 (0.59, 1.82) | ||
Cannabis | Never used | 1637 | 104 | 1.0 | <0.001 | 1.0 | 1.0 |
Used | 91 | 17 | 3.33 (1.84, 6.03) | 2.76 (1.61, 4.73) | 2.92 (1.37, 6.25) | ||
Drugs | Never used | 1711 | 118 | 1.0 | 0.263 | 1.0 | 1.0 |
Used | 20 | 3 | 2.06 (0.58, 7.29) | 2.65 (0.89, 7.90) | 0.53 (0.10, 2.69) | ||
Bullied | Never/1 or 2x | 1615 | 104 | 1.0 | 0.002 | 1.0 | 1.0 |
2/3 + per mth | 112 | 16 | 2.49 (1.41, 4.40) | 2.51 (1.50, 4.18) | 0.98 (0.49, 1.96) | ||
Bullying Others | Never | 1534 | 96 | 1.0 | 0.002 | 1.0 | 1.0 |
Regularly | 192 | 24 | 2.13 (1.32, 3.43) | 2.16 (1.36, 3.45) | 1.19 (0.68, 2.09) | ||
Peer attachment | Secure | 1389 | 75 | 1.0 | <0.001 | 1.0 | 1.0 |
Avoidant | 144 | 17 | 2.30 (1.32, 4.02) | 2.37 (1.38, 4.08) | 1.15 (0.61, 2.16) | ||
Anxious | 97 | 20 | 4.58 (2.65, 7.90) | 4.67 (2.71, 8.01) | 2.72 (1.49, 4.99) | ||
Baseline MFQ | 0 – 4 | 1201 | 42 | 1.0 | <0.001 | 1.0 | 1.0 |
5+ | 532 | 79 | 4.84 (3.26, 7.17) | 5.33 (3.65, 7.78) | 3.63 (2.28, 5.78) | ||
Baseline School connectedness | ≤24 | 266 | 40 | 1.0 | <0.001 | 1.0 | 1.0 |
25+ | 1453 | 78 | 0.32 (0.21, 0.48) | 0.34 (0.23, 0.50) | 0.62 (0.38, 1.02) | ||