Youth perception of difficulty accessing cannabis following cannabis legalization and during the early and ongoing stages of the COVID-19 pandemic: repeat cross-sectional and longitudinal data from the COMPASS study

Table 2 Generalized estimating equation parameter estimates examining the likelihood of perceiving cannabis access as ‘easy’ prior to and during the onset and progression of the COVID-19 pandemic using the repeat cross-sectional samples (n=85,794) and the longitudinal sample (n=4,677) from the COMPASS study (2018/19, 2019/20, 2020/21)

	Model 1^a: Cannabis Access is Easy Repeat Cross-sectional Sample			Model 2^b: Cannabis Access is Easy Longitudinal Sample
	Estimate	95% CI	p-value	Estimate	95% CI	p-value
Intercept	-0.92	-1.04, -0.79	<0.001	-2.27	-2.58, -1.96	<0.001
Gender
Male	0.08	0.02, 0.04	<0.001	-0.03	-0.13, 0.08	0.605
Female (ref)	-			-
Grade^c
Secondary I or II^d	-0.82	-0.91, -0.74	<0.001
9	-
10	0.39	0.35,0.44	<0.001
11	0.64	0.58, 0.69	<0.001
12	0.72	0.04, 0.65	<0.001
Cannabis Use^e
Never use (ref)	-			-
Non-current use	1.60	1.52, 1.68	<0.001	1.07	0.94, 1.20	<0.001
Current use	2.35	2.24, 2.46	<0.001	1.88	1.70, 2.07	<0.001
Time
2018/19 (ref)	-			-
2019/20	-0.12	-0.16, -0.08	<0.001	0.43	0.35, 0.51	<0.001
2020/21	-0.35	-0.43, -0.28	<0.001	0.67	0.59, 0.76	<0.001
Cohort^f
Cohort-1 (ref)	-			-
Cohort-2	0.15	0.04, 0.27	<0.01	0.10	-0.03, 0.24	0.137
Time/Cohort Interaction
2018/19 * Cohort-1 (ref)	-			-
2018/19 * Cohort-2	-			-
2019/20 * Cohort-1	-			-
2019/20 * Cohort-2	-0.39	-0.48, -0.31	<0.001	-0.20	-0.35, -0.06	<0.01
2020/21 * Cohort-1	-			-
2020/21 * Cohort-2	-0.15	-0.24, -0.05	<0.01	0.06	-0.10, 0.21	0.434

^aModel 1: Cannabis access is easy (n=38,775) vs. cannabis access is difficult or I don’t know (n=47,019), controlling for grade, weekly spending money, province and ethnicity
^bModel 2: Cannabis access is easy (n=1,486) vs. cannabis access is difficult or I don’t know (n=3,191), controlling for grade at Time 1, weekly spending money at Time 1, province and ethnicity
^cIn the longitudinal model this is grade at baseline (2018/19)
^dQuebec sample only
^eStudents who reported “I have never used marijuana” are classified as ‘never users’, while those who reported “Once a month”, “2 or 3 times a month”, “Once a week”, “2 or 3 times a week”, “4 to 6 times a week”, and “Every day” are classified as ‘current users’. Those who reported “I have used marijuana but not in the last 12 months” or “Less than once a month”, are classified as ‘non-current users’
^fCohort-1 represents students attending schools where the 2019/20 data was collected using paper-based surveys prior to the onset of the COVID-19 pandemic (September to March 10, 2020) and Cohort-2 represents students attending schools where the 2019/20 data was collected using online surveys after the onset of the COVID-19 pandemic (April to July, 2020)

ISSN: 2049-3258