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Table 4 Measurement Invariance for Different Groups (N = 367)

From: Revisiting the structure of the Yale Global Tic Severity Scale (YGTSS) in a sample of Chinese children with tic disorders

 

Model

χ2 (df)

CFI

TLI

AIC

BIC

RMSEA (90% CI)

SRMR

Decision

Basic model

–

–

0.972

0.963

7326.450

7341.837

0.083

0.034

Accept

Age Model

Basic model

–

0.969

0.958

7336.546

7578.679

0.088

0.037

Accept

Configural Invariance

68

1.000

0.999

–

–

0.009(0.000–0.045)

0.036

Accept

Scalar Invariance

76

0.996

0.996

–

–

0.022(0.000–0.049)

0.045

Accept

Metric Invariance

84

0.996

0.996

–

–

0.021(0.000–0.047)

0.046

Accept

Strict invariance

94

0.995

0.995

–

–

0.023(0.000–0.047)

0.056

Accept

Gender Model

Basic model

–

0.967

0.956

7340.083

7582.215

0.091

0.040

Accept

Configural Invariance

68

0.996

0.994

–

–

0.024(0.000–0.051)

0.039

Accept

Scalar Invariance

76

0.995

0.994

–

–

0.025(0.000–0.050)

0.043

Accept

Metric Invariance

84

0.996

0.996

–

–

0.021(0.000–0.047)

0.044

Accept

Strict invariance

94

0.995

0.995

–

–

0.023(0.000–0.047)

0.053

Accept

  1. Note: age model: N = 367, Younger group n = 284, Older group n = 83; gender model: N = 367, Male group n = 293, Female group n = 74; CFI Comparative Fit Index, TLI Tucker-Lewis Index, AIC Akaike, BIC Sample-size adjusted Bayesian, RMSEA Root Mean Square Error of Approximation, SRMR Standardized Root Mean Square Residual