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. Author manuscript; available in PMC: 2011 May 18.
Published in final edited form as: Drug Alcohol Depend. 2009 Jan 20;101(1-2):115–123. doi: 10.1016/j.drugalcdep.2008.12.003

Table 1.

Confirmatory Factor Analysis of the URICA

X2 DF X2:DF CFI IFI GFI RMSEA
Drug 834 397 2.1 .94 .94 .90 .05
Alcohol 893 397 2.3 .92 .92 .86 .06
Free Model 1728 794 2.2 .93 .93 .88 .04
Constrained 1777 822 2.2 .93 .93 .88 .04
Step X2 DF ΔX2 ΔDF P
Free Model A 1728 794 50 28 < .01
Constrained 1777 822
Precontemplation B 1750 801 22 7 < .01
Precontemplation* 1734 799 6 5 NS
Contemplation C 1749 807 21 13 NS
Action D 1757 814 29 20 NS
Maintenance E 1761 827 6 6 NS
Variances F 1769 825 41 31 NS
Covariances G 1780 831 52 37 NS
*

removing items 5 and 11 from Precontemplation Subscale