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Table 3 Generalized estimating equation (GEE) models predicting cannabis use

From: Changes in cannabis use, exposure, and health perceptions following legalization of adult recreational cannabis use in California: a prospective observational study

  Model 1 (N = 282) Model 2 (N = 252) Model 3 (N = 252)
Variables AOR 95% CI p AOR 95% CI p AOR 95% CI p
Time
 Pre-legalization (ref)          
 1-month post-legalization 1.28 1.07, 1.53 0.01 1.23 1.02, 1.48 0.03 1.27 0.99, 1.63 0.06
 6-months post-legalization 1.28 1.06, 1.55 0.01 1.18 0.98, 1.41 0.08 0.94 0.71, 1.23 0.63
Currently employeda 0.91 0.51, 1.64 0.76 0.53 0.25,1.13 0.10 0.52 0.25, 1.09 0.09
Age     0.97 0.94, 0.99 < 0.01 0.96 0.94, 0.98 0.01
Years of education     0.88 0.75, 1.02 0.08 0.86 0.73, 1.01 0.06
Depression     2.39 1.22, 4.68 0.01 1.90 0.92, 3.92 0.08
Other mental illness     1.08 0.42, 2.76 0.88 1.55 0.58, 4.15 0.38
Vote
 Oppose (ref)          
 Abstain        1.57 0.41, 6.02 0.51
 Favor        4.62 1.55, 13.8 < 0.01
Health Perceptions        1.38 1.16, 1.64 <.001
Time x health perceptions
  Pre-legalization x health perceptions (ref)          
 1-month post-legalization x health perceptions        1.08 0.95, 1.23 0.27
 6-months post-legalization x health perceptions        1.22 1.04, 1.42 0.01
  1. Note. Adjusted odds ratios (AOR), confidence interval (CI), reference group (ref)
  2. The age x time interaction was not significant and therefore dropped from the model
  3. a All models adjusted for employment status, due to its association with attrition