Quality of life assessment in patients with heart failure: validity of the German version of the generic EQ-5D-5L™

Table 2 Measures of global fit, factor reliability and average proportion of variance for the basic CFA model and the CFA model adjusted for the variables physical activity and psychosocial distress

	Valid n	Chi²	Df	P-value	Chi²/Df	TLI	CFI	RMSEA	Factor reliability	AVE
Thresholds for model acceptance				> 0.05	< 3	≥ 0.90	≥ 0.90	≤ 0.08	> 0.60	> 0.50
Basic model
Maximum likelihood method	3225	151.40	5	< 0.001	30.28	0.96	0.98	0.095	0.87	0.58
Asymptotic distribution-free	3225	110.56	5	< 0.001	22.11	0.89	0.94	0.081	0.87	0.59
Adjusted model
Maximum likelihood method	3064	151.24	5	< 0.001	30.25	0.96	0.98	0.098	0.87	0.58
Asymptotic distribution-free	3064	109.87	5	< 0.001	21.98	0.88	0.94	0.083	0.87	0.59

CFA, confirmatory factor analysis; Df, degrees of freedom; TLI, Tucker Lewis Index; CFI, Comparative Fit Index; RMSEA, root mean square error of approximation; AVE, average proportion of variance measured; for thresholds see Schermelleh-Engel, Moosbrugger and Müller 2003; Kline 2011; Hooper, Coughlan and Mullen 2008 [22, 25, 26]

ISSN: 1471-2458