Skip to main content

Advertisement

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