Table 3.

Factor loadings by format type

Question	Pen-and-paper (n = 150)	Web (n = 1366)
Q2: In the past three months how often have you used cannabis?	0.92	0.51
Q3: During the past three months how often have you had a strong desire or urge to use cannabis?	0.98	0.62
Q4: During the past three months how often has your use of cannabis led to health, social, legal or financial problems?	0.76	0.71
Q5: During the past three months how often have you failed to do what was normally expected of you because of your use of cannabis?	0.24	0.67
Q6: Has a friend or relative or anyone else ever expressed concern about your use of cannabis?	0.46	0.44
Q7: Have you ever tried to control, cut down or stop using cannabis?	0.22	0.50