TABLE 2.
Associations between substance use (alcohol and marijuana), positive and negative affect, and college status
| Any Alcohol OR [95% CI] |
Binge Drinking OR [95% CI] |
Number of Drinks RR [95% CI] |
Any Marijuana OR [95% CI] |
|
|---|---|---|---|---|
| Between-person effects, β0 (Level 2; N = 72) | ||||
| Intercept, γ00 | 0.006 [0.004,0.009]*** | 0.001 [0.000,0.001]*** | 0.011 [0.003, 0.038]*** | 0.104 [0.081,0.133]*** |
| Male gender, γ01 | 0.820 [0.696,0.966]* | 0.550 [0.457,0.662]*** | 0.739 [0.470, 1.161] | 0.393 [0.328,0.472]*** |
| White race, γ02 | 1.426 [1.148,1.772]** | 3.902 [2.803,5.432]*** | 2.734 [1.292, 5.789]** | 1.964 [1.610,2.395]*** |
| Parental education (some college or more), γ03 | 3.720 [2.854,4.847]*** | 4.866 [3.508,6.750]*** | 3.850 [1.720, 8.621]*** | 0.933 [0.778,1.118] |
| College status (full-time), γ04 | 0.950 [0.698,1.292] | 1.333 [0.917,1.938] | 1.346 [0.496, 3.654] | 0.032 [0.023,0.044]*** |
| Person-mean positive affect, γ05 | 1.344 [1.203,1.502]*** | 0.983 [0.865,1.119] | 1.285 [0.944, 1.750] | 0.366 [0.312,0.429]*** |
| Person-mean negative affect, γ06 | 0.652 [0.527,0.807]*** | 0.991 [0.789,1.246] | 0.769 [0.434, 1.362] | 0.373 [0.275,0.505]*** |
| Within-person effects (Level 1a) | ||||
| Weekend, β1 | ||||
| Intercept, γ10 | 3.552 [2.636,4.786]*** | 4.468 [3.119,6.400]*** | 4.768 [1.861, 12.220]** | 0.813 [0.682,0.968]* |
| x College status (full-time), γ11 | 1.268 [0.882,1.823] | 1.078 [0.711,1.634] | 0.987 [0.328, 2.974] | 3.182 [2.143,4.726]*** |
| Positive affect (person-mean centered), β2 | ||||
| Intercept, γ20 | 1.190 [0.857,1.652] | 4.205 [3.050,5.797]*** | 3.951 [1.898, 8.225]*** | 0.711 [0.575,0.879]** |
| x College status (full-time), γ21 | 0.935 [0.651,1.342] | 0.304 [0.214,0.432]*** | 0.271 [0.118, 0.622]** | 1.975 [1.375,2.836]*** |
| Negative affect (person-mean centered), β3 | ||||
| Intercept, γ30 | 0.319 [0.183,0.558]*** | 0.191 [0.108,0.335]*** | 0.368 [0.089, 1.527] | 1.203 [0.783,1.847] |
| x College status (full-time), γ31 | 4.643 [2.532,8.516]*** | 7.42 [4.055,13.578]*** | 3.880 [0.831, 18.127] | 0.120 [0.052,0.278]*** |
*
p<.05,
**
p<.01,
***
p<.001
a
Level 1 N=720 person days for alcohol and N=721 for marijuana.
Note: OR = odds ratio; RR = relative risk; CI = confidence interval; x denotes interaction with respective Level 1 effect.