Table 1.
Results from mixed effects models for positive expectancies.
| Covariate | Model 1 | Model 2 | Model 3 | Model 4 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| b | 95% CI | p | b | 95% CI | p | b | 95% CI | p | b | 95% CI | p | |
| Intercept | 4.86 | 3.98, 5.74 | <0.001 | 6.22 | 5.95, 6.50 | <0.001 | 5.54 | 5.19, 5.9 | <0.001 | 4.30 | 3.42, 5.18 | <0.001 |
| Time-fixed covariates | ||||||||||||
| % days intended drinking | -- | -- | -- | -- | -- | -- | ||||||
| with others | 1.05 | 0.09, 2.02 | 0.032 | 1.07 | 0.12, 2.03 | 0.029 | ||||||
| % days intended drinking at | -- | -- | -- | -- | -- | -- | ||||||
| bar or party | 0.01 | −0.39, 0.40 | 0.973 | −0.12 | −0.51, 0.27 | 0.560 | ||||||
| Average intended number | -- | -- | -- | -- | -- | -- | ||||||
| of drinks | 0.01 | −0.05, 0.06 | 0.813 | 0.12 | 0.07, 0.18 | <0.001 | ||||||
| Fraternity/sorority member | 0.07 | −0.15, 0.29 | 0.553 | 0.12 | −0.1, 0.35 | 0.286 | −0.07 | −0.28, 0.14 | 0.521 | −0.14 | −0.37, 0.10 | 0.260 |
| Female sex | 0.19 | −0.03, 0.41 | 0.086 | 0.17 | −0.06, 0.40 | 0.160 | 0.51 | 0.30, 0.72 | <0.001 | 0.36 | 0.12, 0.60 | 0.004 |
| Time-varying covariates | ||||||||||||
| Intended social context | ||||||||||||
| Alone (ref) | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| With others | 0.62 | 0.44, 0.8 | <0.001 | -- | -- | -- | -- | -- | -- | 0.42 | 0.24, 0.60 | <0.001 |
| Don’t know | 0.03 | −0.40, 0.46 | 0.896 | -- | -- | -- | -- | -- | -- | −0.10 | −0.52, 0.32 | 0.636 |
| Intended location | ||||||||||||
| Home (ref) | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| Bar or party | -- | -- | -- | 0.35 | 0.25, 0.44 | <0.001 | -- | -- | -- | 0.21 | 0.11, 0.30 | <0.001 |
| Somewhere else | -- | -- | -- | 0.15 | 0.01, 0.29 | 0.032 | -- | -- | -- | 0.07 | −0.07, 0.20 | 0.331 |
| Intended number of drinks | -- | -- | -- | -- | -- | -- | 0.13 | 0.12, 0.15 | <0.001 | 0.11 | 0.09, 0.13 | <0.001 |
| Weekend | 0.17 | 0.10, 0.24 | <0.001 | 0.16 | 0.09, 0.23 | <0.001 | 0.08 | 0.01, 0.14 | 0.023 | 0.06 | −0.01, 0.14 | 0.077 |
| Study day number | −0.01 | −0.02, 0.00 | 0.005 | −0.01 | −0.02, 0.00 | 0.003 | −0.01 | −0.02, 0.00 | 0.002 | −0.01 | −0.02, 0.00 | 0.003 |
| Measurement burst | −0.21 | −0.24, −0.18 | <0.001 | −0.21 | −0.24, −0.18 | <0.001 | −0.16 | −0.19, −0.14 | <0.001 | −0.17 | −0.2, −0.14 | <0.001 |