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Table 8 Model fit EFA for WURSS-21 using 2 to 7 dimensions

From: Validation of a short form Wisconsin Upper Respiratory Symptom Survey (WURSS-21)

Dimensions Chi-square df χ2/df CFI TLI RMSEA SRMR
2 1547.9 134 11.5 0.986 0.982 0.215 0.064
3 866.5 117 7.4 0.993 0.989 0.167 0.043
4 580.3 101 5.7 0.995 0.992 0.144 0.032
5 381.8 86 4.4 0.997 0.994 0.123 0.023
6 254.8 72 3.5 0.998 0.996 0.105 0.017
7 136.1 59 2.3 0.999 0.998 0.076 0.012
  1. CFI = Comparative Fit Index
  2. TLI = Tuker-Lewis Index
  3. RMSEA = Root Mean Square Error of Approximation
  4. SRMR = Standardized Root Mean Square Residual
  5. Hu and Bentler (1999)[58] suggest the following cut off values for good fit, CFI > .95, TLI > .95, RMSEA < .06, and SRMR < .08