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Table 2 Key study outcomes among completer sample, by intervention group, at baseline, 3-month follow-up (FU3) and 12-month follow-up (FU12)

From: 12-month follow-up of an exploratory ‘brief intervention’ for high-frequency cannabis users among Canadian university students

Measure

Group

N

Mean (95 % CI)

Baseline

FU 3

FU 12

Number of days cannabis used

Cannabis

40

24.0 (22.2-25.8)

23.1 (20.7-25.5)

22.3 (19.8-24.8)

Health

32

23.9 (21.8-26.0)

23.1 (20.6-25.5)

22.1 (18.9-25.3)

Number of cannabis use episodes/day

Cannabis

40

2.3 (1.7-2.9)

2.4 (1.8-3.0)

2.6 (1.6-3.7)

 

Health

32

2.0 (1.7-2.3)

2.4 (1.5-3.4)

2.2 (1.7-2.6)

   

Proportion Responding YES

  

N

Baseline

FU 3

FU 12

Deep inhalation/ breathholding

Cannabis*

40

78 %

52 %

57 %

Health

32

81 %

78 %

68 %

Driving after cannabis use

Cannabis*

40

44 %

31 %

24 %

 

Health

32

30 %

27 %

24 %

  1. * Significant change over periods (p < .05).