Psychometric properties and longitudinal validation of the self-reporting questionnaire (SRQ-20) in a Rwandan community setting: a validation study

Table 4 Results of multigroup confirmative factor analysis using data from BA sample (n = 418) and RA sample (n = 230)

	χ ²	Δχ ²	Δdf	P	RMSEA (90% CI)	RMR	GFI	CFI	TLI
Model A: Equal factors	163.27	-	-	-	0.018 (0.003-0.028)	0.008	0.97	0.99	0.98
Model B: Equal factor loadings	165.76	2.50	9	0.98	0.016 (0.000-0.025)	0.008	0.97	0.99	0.99
Model C: Equal covariances	190.29	24.53	15	0.06	0.018 (0.004-0.026)	0.012	0.96	0.98	0.98
Model D: Equal error variances	269.23	78.94	14	0.000	0.030 (0.023-0.036)	0.013	0.95	0.95	0.95

Note: Δχ ^2:: nested χ ² difference; Δdf: nested df difference; P: P-value assuming the less restrained model to be correct; RMSEA: root mean square error of approximation; 90% CI: 90% confidence interval; RMR: root mean square residual; GFI: goodness of fit index; CFI: comparative fit index; TLI: Tuckler-Lewis Index.

ISSN: 1471-2288