Construct validity of the Suboptimal Health Status Questionnaire-25 in a Ghanaian population

Table 4 Multi-group analysis of fit indices by gender, age group and marital status for three-factor unconstrained model, and models constrained on factor loadings, structural covariance loadings and residual covariance loadings

Model	\(\chi\)²	df	p value	RMSEA	90% CI	SRMR	CFI	GFI	TLI
Unconstrained
Across gender	742.385	526	–	0.072	[0.063, 0.087]	0.078	0.912	0.830	0.900
Across age group	778.907	526	–	0.078	[0.067, 0.090]	0.077	0.898	0.824	0.883
Across marital status	739.473	526	–	0.073	[0.063, 0.086]	0.068	0.912	0.828	0.899
Measurement weights
Across gender	781.238	548	0.015	0.072	[0.034, 0.087]	0.084	0.896	0.821	0.896
Across age group	806.307	548	0.196	0.078	[0.067, 0.089]	0.078	0.895	0.819	0.885
Across marital status	759.372	548	0.589	0.070	[0.062, 0.085]	0.069	0.912	0.824	0.904
Structural covariance
Across gender	793.156	554	0.005	0.072	[0.065, 0.087]	0.087	0.895	0.819	0.895
Across age group	810.555	554	0.289	0.078	[0.066, 0.089]	0.086	0.896	0.818	0.887
Across marital status	767.887	554	0.443	0.070	[0.062, 0.085]	0.078	0.911	0.823	0.904
Measurement residuals
Across gender	870.873	588	< 0.001	0.073	[0.067, 0.089]	0.091	0.883	0.805	0.883
Across age group	859.787	588	0.054	0.078	[0.066, 0.089]	0.087	0.890	0.811	0.888
Across marital status	841.491	588	< 0.001	0.073	[0.065, 0.087]	0.075	0.895	0.806	0.893

df degrees of freedom, RMSEA root mean square error of approximation, CI confidence interval, SRMR standardized root mean square residual, CFI comparative fit index, GFI goodness-of-fit index, TLI Tucker–Lewis Index

ISSN: 1477-7525