Table 1 Summary variables used to train machine learning algorithms
Variable name | Description | Mean | Median | Max | Min | SD |
|---|---|---|---|---|---|---|
Abs.diff | Absolute difference first-last reported drink | −0.39 | 0 | 12 | −17 | 3.14 |
Avg.drinks | Average reported drinks | 3.26 | 3 | 15 | 0 | 2.42 |
Entries | Total number of entries | 10.97 | 8 | 48 | 1 | 9.73 |
intercept | Intercept of trajectory | 0.05 | 0.22 | 4.79 | −2.73 | 1.13 |
IQR.drinks | Inter-quartile range of drinks | 1.69 | 1 | 13.5 | 0 | 1.89 |
Max.drinks | Maximum reported drinks | 6.05 | 6 | 22 | 0 | 3.98 |
Median.drinks | Median reported drinks | 2.92 | 3 | 15 | 0 | 2.62 |
Min.drinks | Minimum reported drinks | 1.67 | 1 | 15 | 0 | 2.24 |
n.binge | Number of binge drinking entries | 0.72 | 0 | 20 | 0 | 1.71 |
n.heavy | Number of heavy drinking entries | 2.35 | 1 | 35 | 0 | 3.32 |
n.light | Number of light drinking entries | 7.9 | 4 | 48 | 0 | 8.79 |
Perc.binge | Percentage binge drinking entries | 0.09 | 0 | 1 | 0 | 0.2 |
Perc.heavy | Percentage of heavy drinking entries | 0.26 | 0.17 | 1 | 0 | 0.3 |
Perc.light | Percentage of light drinking entries | 0.65 | 0.75 | 1 | 0 | 0.35 |
Range.drinks | Range of reported drinks | 4.39 | 4 | 22 | 0 | 4.15 |
Rel.diff | Relative difference first-last reported drinks | −0.06 | 0 | 2.5 | −4.5 | 0.61 |
slope | Slope of trajectory | −0.01 | −0.01 | 9.21 | −14 | 2.34 |
Sum.drinks | Total sum of reported drinks | 28.29 | 16 | 208 | 0 | 32.23 |