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. Author manuscript; available in PMC: 2015 Feb 1.
Published in final edited form as: J Subst Abuse Treat. 2013 Sep 24;46(2):10.1016/j.jsat.2013.08.020. doi: 10.1016/j.jsat.2013.08.020

Table 4.

Measurement Invariance of the Adjective Rating Scale for Withdrawal across Treatment Groups at 3 time points

df χ2 CFI RMSEA SRMR Δdf ΔCFI ΔRMSEA ΔSRMR
Time 1: Baseline
Configural 194 400 0.941 0.064 0.047
Metric 209 423 0.939 0.063 0.051 15 −0.002 −0.001 +.004
Scalar 224 440 0.938 0.061 0.051 15 −0.001 −0.002 0
Time 2: End of taper
Configural 194 357 0.919 0.067 0.056
Metric 209 371 0.919 0.065 0.068 15 0.000 −0.002 +0.012
Scalar 224 392 0.916 0.063 0.069 15 −0.003 −0.002 +0.001
Time 3: 1-month follow-up
Configural 194 295 0.937 0.060 0.057
Metric 209 316 0.933 0.059 0.074 15 −0.004 −0.001 +0.017
Scalar 224 336 0.930 0.058 0.075 −0.003 −0.001 +0.001

Note. CFI = robust comparative fit index; RMSEA = robust root mean square error of approximation; SRMR = robust standardized root mean square residual. χ2 tests were significant at p < .001.