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. Author manuscript; available in PMC: 2018 May 3.

Published in final edited form as: Drug Alcohol Depend. 2005 Dec 20;83(2):95–103. doi: 10.1016/j.drugalcdep.2005.10.016

Table 2.

Standardized factor loadings by substance use factor

	Standardized loadings
	Marijuana	Cocaine	Opioids	Any drug
Measure
Urine positive/negative	.47	.71	.76	.65
Saliva positive/negative	.36	.73	.76	.68
Self-report recency	.71	.89	.91	.89
Self-report quantity peak	.83	.52	.63	.46
Self-report frequency	.76	.61	.75	.60
Goodness-of-fit
Degrees of freedom	5	5	5	5
Chi-square^a	34.91	79.31	129.50	37.24
Comparative Fit Index	.96	.95	.90	.98
Tucker–Lewis Index	.87	.84	.71	.94
Root mean square error	.13	.21	.27	.14

^a

All the chi-squares for goodness-of-fit had p < .001.