. Author manuscript; available in PMC: 2022 Dec 30.

Published in final edited form as: Drug Alcohol Depend Rep. 2022 Nov 22;5:100123. doi: 10.1016/j.dadr.2022.100123

Table 2.

Tetrachoric correlations (standard errors) between study variables.

Drug Use Variable	1.	2.	3.	4.	5.	6.	7.	8.	9.	10.	11.
1. Prescription opioids	–	^*	.81 (0.02)	.72 (0.03)	.53 (0.02)	.61 (0.02)	^*	.65 (0.02)	.65 (0.03)	.69 (0.03)	.69 (0.05)
2. Prescription stimulants^a	.64 (0.02)	–	^*	^*	^*	^*	^*	^*	^*	^*	^*
3. Sedatives	.85 (0.01)	.68 (0.01)	–	.67 (0.04)	.55 (0.02)	.64 (0.03)	^*	.68 (0.02)	.71 (0.03)	.72 (0.03)	.69 (0.05)
4. Heroin	.70 (0.02)	.56 (0.03)	.71 (0.02)	–	.46 (0.04)	.62 (0.04)	^*	.57 (0.04)	.59 (0.06)	.57 (0.05)	.61 (0.07)
5. Cannabis	.59 (0.01)	.68 (0.02)	.63 (0.01)	.67 (0.02)	–	.60 (0.02)	^*	.57 (0.02)	.71 (0.03)	.74 (0.03)	.68 (0.04)
6. Cocaine/crack	.66 (0.01)	.66 (0.01)	.71 (0.01)	.78 (0.02)	.84 (0.01)	–	^*	.70 (0.02)	.70 (0.03)	.77 (0.03)	.67 (0.05)
7. Illicit stimulants^a	.61 (0.02)	.81 (0.01)	.66 (0.01)	.55 (0.02)	.74 (0.02)	.73 (0.01)	–	^*	^*	^*	^*
8. Stimulants^b	^*	^*	^*	^*	^*	^*	^*	–	.69 (0.03)	.78 (0.03)	.71 (0.05)
9. Club drugs	.65 (0.02)	.70 (0.02)	.66 (0.01)	.66 (0.02)	.76 (0.01)	.72 (0.01)	.58 (0.02)	^*	–	.86 (0.02)	.73 (0.05)
10. Hallucinogens	.67 (0.01)	.71 (0.02)	.71 (0.01)	.73 (0.02)	.87 (0.01)	.84 (0.01)	.75 (0.01)	^*	.79 (0.01)	–	.83 (0.04)
11. Inhalants	.62 (0.02)	.59 (0.02)	.65 (0.02)	.67 (0.02)	.73 (0.02)	.72 (0.01)	.63 (0.02)	^*	.69 (0.02)	.79 (0.01)	–

Note. (Mis)Use variables below the diagonal, use disorder variables above the diagonal.

measure only available for (mis)use.

measure only available for use disorder.

measure not available; all correlations significant, p<.001.