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Table 4 Confirmatory Factor Analysis of Domain-level

From: Multidimensional daily diary of fatigue-fibromyalgia-17 items (MDF-fibro-17): part 2 psychometric evaluation in fibromyalgia patients

Parameter

Threshold for Acceptability

MDF-Fibro-17

Classical Statistics

 • Complete Data

≥80%

100.0%

 • Floor Range

≤9%

0.3% – 1.3%

 • Ceiling Range

≤9%

0.3% – 0.5%

Preliminary CFA Second Order Model Before Accounting for Correlated Residuals

 • Path confidents

 

0.87 – 0.99

 • X2 (df)

 

45.45 (5)

 • CFI

≥0.95

0.952

 • NNFI

≥0.90

0.952

 • RMSEA (90% CI)

<0.06

0.15 (0.109 – 0.186)

 • SRMR

<0.08

0.020

Final CFA Model Accounting for Correlated Residual between Global Fatigue Experience and Physical Domain (0.42)

 • Path confidents

 

0.86 – 0.99

 • X2 (df)

 

9.68 (4)

 • CFI

≥0.95

0.997

 • NNFI

≥0.90

0.992

 • RMSEA (90% CI)

<0.06

0.061 (0.007 – 0.111)

 • SRMR

<0.08

0.010

  1. CFI comparative fit index, CI confidence interval, MDF-Fibro-17 Multidimensional Daily Diary of Fatigue-Fibromyalgia-17, NNFI non-normed fit index, RMSEA root mean square error of approximation, SRMR standardized root mean square residual