Overall descriptives

Summary stats

Period 1 (%) Period 2 (%) Chi.square p-val
Use since last prompt 0.25 0.11 144.61 0.000
Any craving since last prompt 0.19 0.16 7.24 0.007
Permit use since last prompt 0.19 0.16 8.94 0.003

Since last prompt

ICC 1 ICC 2 Mean 1 Mean 2 SD 1 SD 2 Cohen’s D
Anxious 0.29 0.45 0.50 0.68 0.90 1.14 -0.18
Bored 0.23 0.36 0.96 0.95 1.22 1.27 0.01
Confident 0.48 0.60 2.15 2.03 1.45 1.49 0.10
Frustrated 0.35 0.41 0.80 0.89 1.17 1.27 -0.08
Interested 0.38 0.54 1.79 1.74 1.36 1.40 0.05
Stressed 0.45 0.41 1.02 1.07 1.28 1.32 -0.05
Motivated 0.47 0.61 1.93 1.87 1.44 1.45 0.05
Relaxed 0.40 0.50 2.20 2.15 1.45 1.44 0.05
PA Total 0.57 0.70 2.02 1.95 1.13 1.19 0.07
NA Total 0.43 0.54 0.82 0.90 0.86 1.02 -0.08
Craving 0.48 0.53 1.38 1.13 3.00 2.79 0.15
Avail. 0.45 0.55 2.54 2.45 1.55 1.59 0.07
Conf. to abstain 0.67 0.77 5.70 5.93 2.26 2.20 -0.16
How high now? 0.14 0.47 1.33 0.82 2.44 2.28 0.33

Descriptives during episodes

Reasons for use

Period 1 (%) Period 2 (%)
For social reasons 0.12 0.15
To cope with negative feelings 0.12 0.13
For pleasure 0.68 0.60
To conform to what others were doing 0.02 0.05
To expand my mind 0.06 0.06

Companionship stats

Blank = 0%

Period 1 (%) Period 2 (%) Chi.square p-val
Alone during use 0.35 0.44 4.62 0.032
Family 0.17 0.07 6.61 0.010
Friend 0.77 0.93 13.87 0.000
Bf/gf 0.31 0.29 0.60 0.438
Acquaintance 0.15 0.13 1.87 0.171
Someone else 0.10 0.07 0.60 0.438
When with family:
  Parents 0.21 0.40 0.527
  Brother or sister 0.45 0.45 0.60 0.438
  Other relative 0.44 0.80 1.15 0.283
When with friends:
  Best male friend 0.24 0.26 0.57 0.450
  Best female friend 0.15 0.16 0.00 1.000
  Other friend 0.40 0.38 0.11 0.736

Feelings during use

ICC 1 ICC 2 Mean 1 Mean 2 SD 1 SD 2 Cohen’s D
General Pos. Feeling 0.56 0.62 2.79 2.51 1.09 1.20 0.26
Guilt 0.50 0.56 0.56 0.75 0.82 0.87 -0.20
Fault 0.50 0.70 1.98 1.67 1.17 1.14 0.29
Able to give up 0.61 0.57 1.01 1.06 0.99 1.00 -0.05
Encouraged 0.59 0.75 1.67 1.15 1.05 1.05 0.51