Table 4.
Results of the multivariate analysis (random-effect regression) evaluating potential predictors of the change in reaction time before and after the stay inside the recreational site (dependent variable: time change = time after -time before)
| Regression coefficient | (95% CI) | p | |
|---|---|---|---|
| Change in BAC before and after the stay inside the recreational site (BAC after -BAC before), 0.1 g/l increase | 0.019 | (0.013; 0.025) | < 0.001 |
| Male gender | 0.025 | (-0.001; 0.052) | 0.052 |
| BAC change*Male gender | -0.010 | (-0.016; -0.003) | 0.004 |
| Drug use | 0.029 | (-0.010; 0.069) | 0.15 |
| BAC*drug use | 0.001 | (-0.009; 0.011) | 0.9 |
| Age, 1-year increase | 0.001 | (-0.003; 0.005) | 0:6 |
| Educational level, ordinal | 0.009 | (-0.006; 0.025) | 0.2 |
| Occupation | |||
| Student (ref. category) | 0 | -- | -- |
| Employed | -0.009 | (-0.036; 0.018) | 0.5 |
| Unemployed | -0.019 | (-0.060; 0.023) | 0.4 |
| Driving licence years | |||
| No licence (ref. category) | 0 | -- | -- |
| < = 2 | 0.006 | (-0.032; 0.044) | 0.8 |
| 3-5 | 0.015 | (-0.025; 0.053) | 0.5 |
| > 5 | 0.019 | (-0.023; 0.062) | 0.4 |
| Arrested because of driving after drinking in the last year | 0.001 | (-0.001; 0.002) | 0.5 |