Table 4.

Self-reported cannabis use by random subsample (expressed in %), using the cannabis-related questions of the ASSIST V3.0 questionnaire

Question	Web total sample (n = 1366)	Web subsample 1 n = 675	Web subsample 2 n = 691	p 1
2. In the past three months how often have you used cannabis?				1.0
- Never	2.5	2.5	2.5
- One or two times	3.9	3.9	3.9
- Monthly	4.2	4.1	4.3
- Weekly	15.4	16.0	14.8
- Daily or almost daily	74.0	73.5	74.5
3. During the past three months how often have you had a strong desire or urge to use cannabis?				0.6
- Never	12.3	12.6	12.2
- One or two times	14.0	15.3	12.6
- Monthly	5.3	5.3	4.9
- Weekly	18.4	17.9	18.8
- Daily or almost daily	50.1	48.9	51.5
4. During the past three months how often has your use of cannabis led to health, social, legal or financial problems?				0.8
- Never	45.0	44.4	45.7
- One or two times	21.2	22.4	19.8
- Monthly	13.3	13.2	13.5
- Weekly	11.8	11.3	12.3
- Daily or almost daily	8.7	8.7	8.7
5. During the past three months how often have you failed to do what was normally expected of you because of your use of cannabis?				0.8
- Never	40.5	41.5	39.4
- One or two times	22.3	21.0	23.7
- Monthly	10.9	10.8	11.1
- Weekly	15.6	15.7	15.2
- Daily or almost daily	10.8	11.0	10.6
6. Has a friend or relative or anyone else ever expressed concern about your use of cannabis?				0.3
- No, never	35.3	34.2	36.0
- Yes, in the past three months	17.2	16.1	18.2
- Yes, but not in the past three months	47.5	49.6	45.7
7. Have you ever tried to control, cut down or stop using cannabis?				0.7
- No, never	35.3	36.0	35.2
- Yes, in the past three months	25.8	24.7	26.8
- Yes, but not in the past three months	38.9	39.3	38.1
Cannabis involvement score (sum of responses to Q2-Q7)	22.8 (9.9)	22.8 (9.8)	22.8 (10.0)	1.0
Risk level according to ASSIST v3.0				0.9
- Low (0–3)	3.3	3.1	3.6
- Moderate (4–26)	54.2	53.8	53.8
- High (≥27)	42.5	43.1	42.5

p-Values resulting from comparison of Subsample 1 and Subsample 2.