Cross-cultural adaptation of research instruments: language, setting, time and statistical considerations

Table 4 Confirmatory analysis of the new two-factor attitudinal scale

*Single group analysis*	RMSEA (90% CI)	CFI	TLI	AVE		AIC	BCC
OMT (n=126)				F1	F2
Unadjusted model	0.072 (0.047; 0.096)	0.928	0.913	0.515	0.276	N/A	N/A
Adjusted*	0.063 (0.034; 0.088)	0.946	0.934	0.509	0.276	N/A	N/A
Harm reduction (n=108)
Unadjusted model	0.079 (0.052; 0.105)	0.905	0.884	0.506	0.267	N/A	N/A
Adjusted model II**	0.049 (0.000; 0.080)	0.964	0.955	0.492	0.261	N/A	N/A
Measurement Invariance
Adjusted model***
Equal form (Unconstrained model)	0.039 (0.021; 0.053)	0.959	0.947	N/A	N/A	284.528	301.136
Equal factor loading	0.043 (0.028; 0.056)	0.945	0.935	N/A	N/A	288.024	301.587
Equal structural covariances	0.045 (0.031; 0.058)	0.937	0.928	N/A	N/A	292.944	305.677
Equal measurement residuals	0.061 (0.050; 0.072)	0.874	0.868	N/A	N/A	345.446	354.580
Saturated model	N/A	N/A	N/A	N/A	N/A	364.000	414.377
Independent model	0.169 (0.160; 0.178)	N/A	N/A	N/A	N/A	1241.206	N/A

*Allowing covariance between Err1 ↔ Err6, ** Allowing covariance between Err 6 ↔ 7, Err 11 ↔ 12
***Allowing covariance between Err1 ↔ Err6, Err6 ↔ Err7, Err 11 ↔ 12

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