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

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

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 scoresa (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 scoresa (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 scoresa (SD) 1 = Never 5 = Definitely

3.6 (1.2)

3.7 (1.3)

N/A

0.663

  1. 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.