Skip to main content
. Author manuscript; available in PMC: 2022 Jan 1.
Published in final edited form as: J Adolesc Health. 2020 May 8;68(1):110–115. doi: 10.1016/j.jadohealth.2020.03.039

Table 3:

Results of Time Series Analyses

Factor Proportion of participants who ever used (%) Proportion of ever users who used in the last 28 days (%) Mean attitudes score of participants Mean intention score of participants1
Coefficient p-value Coefficient p-value Coefficient p-value Coefficient p-value
Intercept in WI 33.4 0.007 34.0 <0.001 1.99 <0.01 0.78 0.10
Slope in WI pre-legalization 13.9 0.10 8.3 <0.001 0.42 0.004 0.55 0.34
Difference in intercept of WA vs. WI 3.1 0.53 9.0 <0.001 −0.20 0.014 −0.33 0.48
Difference in pre-legalization slope between WA vs WI −5.8 0.49 −5.6 <0.001 0.00 0.97 0.05 0.94
Immediate effect in WI at time of legalization −3.6 0.68 −8.0 <0.001 −0.15 0.08 0.00 0.99
Difference between pre- and post-legalization slopes in WI −9.5 0.17 −14.6 <0.001 −0.27 0.01 −0.60 0.29
Difference in immediate effect at time of legalization between WA vs. WI 3.5 0.78 −1.4 0.002 0.10 0.25 0.10 0.93
Difference between pre-and post-legalization slopes in WA vs. WI, i.e. difference in differences of the slopes 6.4 0.43 11.5 <0.001 0.02 0.72 0.00 0.99
1

Intention to use marijuana in the next six months; WA, Washington; WI, Wisconsin