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Table 7 Comparison of FPQ-9 structure in groups with and without chronic pain

From: Psychometric evaluation of the Japanese version of the fear of pain questionnaire-III and its association with dental anxiety: a cross-sectional study

Model

X2

df

CFI

RMSEA

SRMR

AIC

BIC

Overall model

63.7

24

0.977

0.064

0.029

9521

9640

Configural model

91.1

48

0.975

0.067

0.035

9535

9774

Metric model

99.5

54

0.974

0.065

0.042

9531

9747

Scalar model

108.9

60

0.972

0.064

0.044

9529

9720

Strict model

119.1

69

0.971

0.06

0.044

9521

9676

  1. Abbreviations: CFI, the comparative fit index; RMSEA, the root mean square error of approximation; SRMR, standardized root mean square residual; AIC, Akaike’s information criterion BIC, Bayesian information criterion