Factorial structure and measurement invariance of the Chinese version of the Oral Health Impact Profile-14 among clinical populations and non-clinical populations: an evidence for public oral investigations

Table 5 Measurement invariance model across genders in the clinical populations fitting indices and comparison

Model	χ²(df), p	CFI	TLI	SRMR	RMSEA	Model comparison	∆CFI
Male	132.008(56), p < 0.001	0.951	0.920	0.042	0.074
Female	99.021(56), p < 0.001	0.965	0.943	0.032	0.057
Model 1	230.333(112), p < 0.001	0.957	0.930	0.037	0.066
Model 2	237.064(119), p < 0.001	0.957	0.934	0.039	0.064	2 vs. 1	0.000	-0.002
Model 3	249.092(126), p < 0.001	0.955	0.935	0.040	0.063	3 vs. 2	-0.002	-0.001
Model 4	264.613(140), p < 0.001	0.955	0.941	0.049	0.060	4 vs. 3	0.000	-0.003

Model 1 = configural invariance; Model 2 = metric invariance; Model 3 = scalar invariance; Model 4 = error variance invariance; χ², chi-square; df, degree of freedom; CFI, comparative fit index; TLI, Tucker-Lewis index; SRMR, standardized root mean square residual; RMSEA, root-mean-square error of approximation; ∆, change in the parameter

ISSN: 1472-6831