Mobile phone brief intervention applications for risky alcohol use among university students: a randomized controlled study

Table 4 Baseline and 7-week follow-up alcohol consumption outcomes, comparing intervention groups to controls ^a

Measures of alcohol consumption in means (SD)	Control		PartyPlanner (n = 153)		PartyPlanner compared to Control^alinear mixed models	Promillekoll (n = 341)		Promillekoll compared to Control^alinear mixed models
Measures of alcohol consumption in means (SD)	Baseline (n = 489)	Follow-up (n = 489)	Baseline	Follow-up	Time x Group p-value	Baseline	Follow-up	Time x Group p-value
Quantity (standard glasses/week)	9.146 (6.178)	8.619 (6.281)	8.570 (6.122)	8.317 (6.449)	0.816	9.617 (6.263)	9.746 (7.053)	0.411
Frequency (drinking occasions/week)	2.288 (1.191)	2.152 (1.192)	2.165 (1.122)	2.171 (1.232)	0.225	2.242 (1.196)	2.362 (1.234)	< 0.001
Binge occasions (no per week)	0.971 (0.852)	0.897 (0.838)	0.880 (0.760)	0.791 (0.822)	0.507	1.082 (0.875)	1.018 (0.837)	0.629
eBAC^b/week	0.017 (0.015)	0.016 (0.015)	0.016 (0.013)	0.015 (0.016)	0.914	0.017 (0.014)	0.017 (0.018)	0.750
Peak eBAC^c/month	0.128 (0.082)	0.118 (0.080)	0.126 (0.087)	0.122 (0.096)	0.649	0.108 (0.087)	0.119 (0.084)	0.776

^aAnalyses comparing the two intervention groups to controls included only individuals who reported actually using the assigned app. Analyses were controlled for the number of times participants reported using the app, previous use of the publicly available Promillekoll app, and self-reports on having spoken to someone in the past 12 months about their alcohol use.
^bEstimated average percentage BAC for the week.
^cEstimated average peak percentage BAC during the past month.

ISSN: 1940-0640