Table 2. Model Fit Indices.

Variable	DEMQOL (English)			DEMQOL-Proxy (English)			DEMQOL (Spanish)			DEMQOL-Proxy (Spanish)
	Model χ2	RMSEA [90% CI]	CFI	Model χ2	RMSEA [90% CI]	CFI	Model χ2	RMSEA [90% CI]	CFI	Model χ2	RMSEA [90% CI]	CFI
Note. RMSEA = root mean square error of approximation; CFA = confirmatory factor analytic; CFI = comparative fit index. Model 1a: Configural model for 28-item DEMQOL and 31-item DEMQOL-Proxy. Model 1b: Configural model (without POS items) for 23-item DEMQOL and 26-item DEMQOL-Proxy. Model 1c: Configural model for 23-item DEMQOL (without NEG domain) and 26-item DEMQOL-Proxy (without social relationship [SOC] domain). Model 2a: Configural invariance. Model 2b: Configural, metric, scalar invariance.
a Model 2a vs 2b: DIFFTEST χ2 = 325.029 (Δdf = 74), p < .0001 for DEMQOL. b Model 2a vs. 2b: DIFFTEST χ2 = 405.844 (Δdf = 86), p < .0001 for DEMQOL-Proxy.
Single-group CFA
Model 1a (df = 328)	1,420.582	.062 [.059, .065]	.918				738.266	.055 [.050, .060]	.958
Model 1b (df = 213)	793.336	.056 [.052, .060]	.946				531.840	.060 [.054, .066]	.964
Model 1c (df = 217)	664.715	.064 [.060, .068]	.928				568.640	.062 [.056, .069]	.961
Multiple-group CFAa
Model 2a (df = 434)	1,553.474	.063 [.060, .067]	.943
Model 2b (df = 508)	1,788.347	.063 [.060, .066]	.935
Single-group CFA
Model 1a (df = 406)				1,647.018	.058 [.055, .061]	.932				1,133.244	.060 [0 .056, .064]	.950
Model 1b (df = 277)				715.923	.042 [.038, .046]	.972				912.963	.068 [0 .063, .073]	.951
Model 1c (df = 281)				1,000.566	.053 [.050, .057]	.954				944.623	.069 [0 .064, .074]	.948
Multiple-group CFAb
Model 2a (df = 562)				1,930.082	.059 [.056, .062]	.952
Model 2b (df = 648)				2,254.917	.059 [.057, .062]	.943