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Table 3 Confirmatory factor analysis tests and goodness of fit indices (n = 567)

From: Evaluation of three patient reported outcome measures following operative fixation of closed ankle fractures

Instrument χ2 df CFIa TLIb RMSEAc
LEFS unidimensional 843.4 171 0.99 0.99 0.091
LEFS bidimensionald 604.4 169 1.00 1.00 0.073
SEFAS 165.9 54 0.99 0.99 0.063
OMAS 122.8 27 0.99 0.98 0.087
  1. All χ2 tests of model fit were significant with the exception of the LEFS (p < 0.01)
  2. aComparative fit index
  3. bTucker-Lewis Index
  4. cRoot mean square error of approximation
  5. dLEFS bi-dimensional easy (1,3–5,7,8,10,11,13,15,20) and difficult (2,6,9,12,14,16–19) items