Table 2.

Individual substance use and psychiatric factors stratified by past-year medical marijuana use.

	Medical Marijuana Use		No Medical Marijuana Use		χ2	p-value
	n	%	n	%
Total	4,771,828	1.9%	241,141,839	98.1%
Serious Mental Illness (SMI)					859.6	<0.001
No SMI	4,103,899	86.0%	230,557,975	95.6%
SMI	667,929	14.0%	10,583,864	4.4%
Major Depressive Episode (MDE)					727.1	<0.001
No MDE	3,856,462	80.8%	222,055,438	92.1%
MDE	840,377	17.6%	16,507,026	6.8%
Missing	74,989	1.6%	2,579,375	1.1%
Heavy Alcohol Use					194.7	<0.001
No	4,200,290	88.0%	225,394,700	93.5%
Yes	571,538	12.0%	15,747,139	6.5%
Cocaine Use					1276.6	<0.001
No	4,293,552	90.0%	236,417,619	98.0%
Yes	478,276	10.0%	4,724,220	2.0%
Heroin Use					129.9	<0.001
No	4,706,617	98.6%	240,364,838	99.7%
Yes	65,211	1.4%	777,002	0.3%
Stimulant Misuse					180.3	<0.001
No	4,538,144	95.1%	236,449,043	98.1%
Yes	233,684	4.9%	4,692,796	1.9%
Nicotine Dependence					809.7	<0.001
No	3,585,707	75.1%	215,016,584	89.2%
Yes	1,186,121	24.9%	26,125,255	10.8%
Non-Marijuana SUD					526.2	<0.001
No	4,518,644	94.7%	238,188,712	98.8%
Yes	253,184	5.3%	2,953,127	1.2%
Perceived Risk of Marijuana Use					1736.8	<0.001
No Risk to Moderate Risk	4,665,562	97.8%	160,180,676	66.4%
Great Risk	93,870	2.0%	76,763,699	31.8%
Missing	12,396	0.3%	4,197,464	1.7%
Prescription Pain Reliever Use					1157.0	<0.001
No Use	2,071,699	43.4%	158,827,899	65.9%
Appropriate Use	2,157,356	45.2%	72,739,012	30.2%
Misuse	542,773	11.4%	9,574,928	4.0%
Medical Marijuana State					1197.6	<0.001
No	719,609	15.1%	100,802,805	41.8%
Yes	4,052,220	84.9%	140,339,034	58.2%