Baseline 12-months Change
n M SD n M SD t
Overall              
BDI 71 30.39 9.14 70 18.10 11.61 9.243***
BDI-II cognitive sub-scale 71 12.44 4.73 70 7.07 5.06 8.328***
BDI-II affective sub-scale 71 6.72 2.51 70 3.73 2.95 7.903***
BDI-II somatic sub-scale††† 71 11.31 3.98 70 7.30 4.74 6.920***
Mean drinks / week 60 48.82 29.77 60 29.62 27.84 5.713***
Heavy drinking days / week 61 4.32 2.27 61 2.60 2.55 5.295***
Males              
BDI 44 29.63 9.48 43 16.26 10.82 8.443***
BDI-II cognitive sub-scale 44 12.48 4.68 43 6.51 4.91 7.775***
BDI-II affective sub-scale 44 6.39 2.64 43 3.14 2.32 8.093***
BDI-II somatic sub-scale 44 10.91 4.14 43 6.60 4.80 5.632***
Mean drinks / week 35 55.88 31.50 35 34.44 30.49 4.703***
Heavy drinking days / week 36 4.49 2.32 36 2.85 2.81 4.128***
Females              
BDI 27 31.59 8.59 27 21.04 12.40 4.494***
BDI-II cognitive sub-scale 27 12.37 4.88 27 7.96 5.26 3.896***
BDI-II affective sub-scale 27 7.26 2.23 27 4.67 3.59 3.485**
BDI-II somatic sub-scale 27 11.96 3.69 27 8.41 4.50 3.971***
Mean drinks / week 25 38.94 24.48 25 22.87 22.53 3.230**
Heavy drinking days / week 25 4.09 2.23 25 2.24 2.15 3.291**
***p<0.001; **p<0.01; **p<0.05
†9 items, range: 0-27; ††4 items, range: 0-12; †††8 items, range: 0-24
Table 4: Baseline and 12-month means, standard deviations and change in depression and alcohol use variables.