TABLE 4.
Step | R | Δ R2 | Anova | |
---|---|---|---|---|
MEEQ-Bp | ||||
1) Age first used | 0.240 | 0.050 | 0.058 | F (1, 123) = 7.53, p < .007 |
2) No. days smoked in last 3 mo. | 0.272 | 0.059 | 0.016 |
F(2,122) = 4.86, p < .009 FCH(1, 122) = 2.12, p > .148 |
3) MEEQ-Bp | 0.288 | 0.060 | 0.009 |
F(3, 121) = 3.65, p < .015 FCH(1, 121) = 1.20, p > .276 |
MEEQ-Bn | ||||
1) Age first used | 0.240 | 0.050 | 0.058 | F(1, 123) = 7.53, p < .007 |
2) No. days smoked in last 3 mo. | 0.272 | 0.059 | 0.016 |
F(2,122) = 4.86, p < .009 FCH(1, 122) = 2.12, p > .148 |
3) MEEQ-Bn | 0.462 | 0.194 | 0.140 |
F(3, 121) = 10.94, p < .001 FCH(1, 121) = 21.46, p < .001 |
Note. MEEQ-Bp = Marijuana Effect Expectancy Questionnaire—Adolescent Brief, positive scale; MEEQ-Bn = Marijuana Effect Expectancy Questionnaire—Adolescent Brief, negative scale.
N = 125 because this variable calculated only if adolescent had access to marijuana for ≥45 days out of 90.