Table 2.
Means, Standard Deviations, and ANOVA Results for Substance Use, Leisure Boredom, and Restructuring Variables
| Variable | Wave 1 | Wave2 | Wave3 | Wave4 | Wave5 | Wave6 | Wave7 | Wave8 |
|---|---|---|---|---|---|---|---|---|
| Substance Use Composite | 1.85a
(2.61) |
2.50b
(3.09) |
3.19c
(3.42) |
3.87d
(3.82) |
4.31e
(3.90) |
4.44e
(3.87) |
4.82e
(3.90) |
4.46e
(3.79) |
| F(7, 10371)= 141.72, p <.0001, p η2. 0.09 | ||||||||
|
|
||||||||
| Leisure Boredom |
1.71a
(0.85) |
1.62ab
(0.87) |
1.69ac
(0.90) |
1.63ab
(0.90) |
1.61bc
(0.90) |
1.57bc
(0.90) |
1.52b
(0.92) |
1.52bc
(0.87) |
| F(7, 10336) = 6.14,p <.0001, η2=0.01 | ||||||||
|
|
||||||||
| Restructuring | 2.63 (0.77) |
2.63 (0.75) |
2.63 (0.75) |
2.64 (0.73) |
2.61 (0.72) |
2.57 (0.71) |
2.65 (0.70) |
2.63 (0.68) |
Note: Nwave1 = 2580. Substance use composite range 0-20, leisure boredom and restructuring range 0-4. Waves represent measurement occasions at the beginning and end of each semester from the beginning of 8th grade through the beginning of 11th grade. Differing subscripts identify significant mean differences using Bonferroni adjusted post-hoc tests. Like subscripts indicate nonsignificant mean differences.