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Table 4 Fit statistics from CFA of WDEQ items (n = 718)

From: Assessment of the dimensionality of the Wijma delivery expectancy/experience questionnaire using factor analysis and Rasch analysis

Model Chi sq df p RMSEA CFI TLI
Single factor solution original 33 items 9332.79 495 <.001 .16 .69 .67
Four factors 27 items 2938.47 318 <.001 .11 .90 .89
Four factors 27 items correlated errors a: 5/4, 27/25, 14/13, 14/18 2220.83 314 <.001 .09 .93 .92
  1. RMSEA root mean square of approximation (values < .05 indicate close fit, values between .05 and .08 indicate reasonable fit and values above .10 indicate poor fit, [44])
  2. CFI comparative fit index (values above .95 are desirable, [45])
  3. TLI tucker-lewis index (values above .95 are desirable, [45])
  4. aTo improve model fit the error terms between these pairs of items were allowed to correlate, reflecting similarity in item content