Table 11. Comparison 6: ’Driving Whilst Intoxicated program’ + incarceration versus incarceration alone: days driving after five or more drinks, self-reported (skewed data).

Study	Outcome	n(Exp)	Mean(Exp)	SD(Exp)	n(Cntrl)	Mean(Cntrl)	SD(Cntrl)	Statistic
Woodall 2007	Days driving after 5 or more drinks in past 30 days; self-reported; at 6 months	30	0.87	3.73	13	0.08	0.28	Favours neither condition Completer analysis (see note 1)
Woodall 2007	Days driving after 5 or more drinks in past 30 days; self-reported; at 12 months	30	0.57	1.63	13	0.38	0.77	Favours neither condition Completer analysis (see note 1)
Woodall 2007	Days driving after 5 or more drinks in past 30 days; self-reported; at 24 months	30	0.50	1.25	13	0.31	0.63	Favours neither condition Completer analysis (see note 1)
Woodall 2007	Days driving after 5 or more drinks in past 30 days; self-reported; mean improvement over baseline; at 24 months	30	3.02	4.93	13	2.28	4.22	Favours neither condition Completer analysis (see note 1)

1. Trial investigators report a significant overall main effect of time (P < 0.001), ”indicating a decline in self-reported drinking and driving from intake to post-incarceration assessments” (p.982, col 2) and a significant AsPD-by-time interaction (P < 0.001) ”resulting from the fact that the AsPD participants showed a greater improvement over time than the non-AsPD participants” (p.982, col 2), but that the group-by-time interaction was not significant (ANOVA, mixed factorial design).