Table 1.

Factorial Validity of Treatment Burden Questionnaire

	CFI (>  0.9)	NNFI (>  0.9)	RMSEA (<  0.08)	RMRs (<  0.08)	AGFI (>  0.9)
Unifactorial	0.89	0.87	0.13	0.12	0.90
Two Factors	0.96	0.95	0.083	0.077	0.96
Three Factors	0.98	0.97	0.063	0.068	0.96

Confirmatory Factor Analysis determining the dimensional structure of the questionnaire by use of one, two or three factors. CFI Comparative Fit Index, NNFI (Non) NormedFit Index, RMSEA Root Mean Square Error of Approximation RMRs Standardized Root Mean Square Residual, AGFI (Adjusted) Goodness of Fit