Table 1.

Median odds ratio for the hierarchical age-period-cohort estimates of period and cohort effects among 18- to 79-year-olds in six waves of the Australian National Drug Strategy Household Survey from 2001–2016.

Outcome	Cohort effect			Period effect
	Covariance Parameter Estimate (95% CI)	SE	Median Odds Ratio	Covariance Parameter Estimate (95°% CI)	SE	Median Odds Ratio
Past year cannabis use	1.29 [0.91, 1.95]	0.25	1.58	0.19 [0.07, 1.15]	0.12	1.37
Male	1.02 [0.72, 1.56]	0.20	1.51	0.15 [0.06, 0.89]	0.09	1.32
Female	1.78 [1.25, 2.75]	0.35	1.72	0.25 [0.10, 1.55]	0.16	1.44
Completed 12th grade	7.22 [5.13, 10.92]	1.38	2.93	0.77 [0.30, 4.67]	0.49	1.90
Did not complete 12th grade	0.52 [0.37, 0.78]	0.10	1.34	0.06 [0.02, 0.37]	0.04	1.20
Cannabis use should be a criminal offense	0.02 [0.02, 0.03]	0.004	1.06	0.03 [0.01, 0.18]	0.02	1.14
Support legalization of cannabis	0.06 [0.04, 0.09]	0.01	1.10	0.04 [0.02, 0.26]	0.03	1.17

CI = confidence interval; SE = standard error.