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

Table 3 Self-reported data on prior use of Promillekoll, speaking to someone about use, and app usability

Measurement occasion	Questions	PartyPlanner (n = 155-7)	Promillekoll (n = 342)	Control group (n = 489)	Significance level (p-value)
Baseline	Had you tried the Promillekoll app before agreeing to participate in this study? % of yes responses (n)	34.8 (54)	34.5 (118)	33.7 (165)	0.080
Follow-up	Have you spoken to someone regarding your alcohol consumption during the last 12 months? % of yes responses (n)	25.3 (39)	27.2 (93)	20.7 (101)	0.957
Follow-up	How did you experience using the app? Mean scores^a (SD) 1 = Very difficult 5 = Very easy	3.2 (1.1)	4.0 (1.1)	N/A	< 0.001
Follow-up	In your opinion, how suitable is an app of this kind for helping people with risky alcohol consumption? Mean scores^a (SD) 1 = Not at all 5 = Very suitable	3.6 (1.2)	3.4 (1.2)	N/A	0.171
Follow-up	Would you recommend using an app of this kind to a friend who wanted to keep track of his or her alcohol consumption? Mean scores^a (SD) 1 = Never 5 = Definitely	3.6 (1.2)	3.7 (1.3)	N/A	0.663

^aScores are given as discrete values on the scale of 1–5. The highest and lowest scores are defined in each cell under the question.

ISSN: 1940-0640