Table 2.
Age 18 psychological predictors of SLT cessation by age 28 among age 18 daily SLT users.
| Characteristic at age 18 | SLT Cessation Age: 28 | OR (95% CI)* | p-value | |
|---|---|---|---|---|
| Continued SLT Use | SLT Cessation | |||
| N | 121 | 71 | ||
| SLT Usage | ||||
| 1 – 3 times per day | 56 (56.0%) | 44 (44.0%) | ref | |
| 4 – 10 times per day | 43 (71.7%) | 17 (28.3%) | 0.50 (0.26 – 0.96) | |
| > 10 times per day | 22 (68.7%) | 10 (31.3%) | 0.58 (0.18 1.81) | 0.09 |
| Experimental Condition | ||||
| Control | 55 (63.2%) | 32 (36.8%) | ref | |
| Experimental | 66 (62.9%) | 39 (37.1%) | 1.07 (0.57 – 1.99) | 0.84 |
| Participate in Team Sports, n (%) | ||||
| No | 43 (62.3%) | 26 (37.7%) | ref | |
| Yes | 78 (63.4%) | 45 (36.6%) | 0.90 (0.49 – 1.65) | 0.72 |
| Parent’s Level of Education, n (%) | ||||
| ≤ High School | 43 (68.3%) | 20 (31.7%) | ref | |
| > High School | 66 (59.5%) | 45 (40.5%) | 1.55 (0.84 – 2.84) | |
| Missing | 12 (66.7%) | 6 (33.3%) | 1.36 (0.53 – 3.46) | 0.37 |
| Parent Non-compliance, n (%) | ||||
| 1st Quartile, score = 0 – 1 | 26 (57.8%) | 19 (42.2%) | ref | |
| 2nd Quartile, score = 2 | 35 (66.0%) | 18 (34.0%) | 0.75 (0.33 – 1.70) | |
| 3rd Quartile, score = 3 | 21 (56.8%) | 16 (43.2%) | 1.11 (0.53 – 2.32) | |
| 4th Quartile, score = 4+ | 39 (68.4%) | 18 (31.6%) | 0.65 (0.33 – 1.28) | 0.56 |
| Friend Compliance, n (%) | ||||
| 1st Quartile, score = 0 | 30 (55.2%) | 16 (34.8%) | ref | |
| 2nd Quartile, score = 1 | 27 (57.4%) | 20 (42.6%) | 1.45 (0.75 – 2.79) | |
| 3rd Quartile, score = 2 | 29 (61.7%) | 18 (38.3%) | 1.22 (0.57 – 2.62) | |
| 4th Quartile, score = 3 + | 35 (67.3%) | 17 (32.7%) | 0.83 (0.35 – 1.98) | 0.30 |
| Rebelliousness, n (%) | ||||
| 1st Quartile, score = 0 – 4 | 33 (56.9%) | 25 (43.1%) | ref | |
| 2nd Quartile, score = 5 | 20 (66.7%) | 10 (33.3%) | 0.69 (0.25 – 1.90) | |
| 3rd Quartile, score = 6 – 7 | 40 (69.0%) | 18 (31.0%) | 0.63 (0.25 – 1.61) | |
| 4th Quartile, score = 8 + | 28 (60.9%) | 18 (39.1%) | 0.92 (0.34 – 2.48) | 0.71 |
| Thrill-seeking, n (%) | ||||
| 1st Quartile, score = 0 – 3 | 33 (66.0%) | 17 (34.0%) | ref | |
| 2nd Quartile, score = 4 | 17 (51.5%) | 16 (48.5%) | 1.92 (0.65 – 5.68) | |
| 3rd Quartile, score = 5 | 39 (62.9%) | 23 (37.1%) | 1.15 (0.47 – 2.84) | |
| 4th Quartile, score = 6 + | 32 (68.1%) | 15 (31.9%) | 0.89 (0.37 – 2.09) | 0.54 |
*
All logistic regression models adjust for experimental condition, age 12 participation in team sports, school grades, and parent education, and age 18 level of SLT usage; ref = reference category for odds ratios. P-values are from a Wald’s test of homogeneity in SLT cessation rates across predictor categories.
Percentages are row-based.