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Table 4 Fit statistics for the reflective indicator models

From: Response shift in health-related quality of life measures in the presence of formative indicators

Model χ2 df p-value RMSEA CFI Δχ2 Δdf p-value
Baseline 51.54 34 0.027 0.04 0.99
Constrained modela 66.48 41 0.007 0.05 0.98 14.45 7 0.044
Constrained modelb 61.05 40 0.018 0.04 0.98 9.45 6 0.150
  1. df, degree of freedom; RMSEA, root mean square approximation; CFI, comparative fit index
  2. aLoadings, intercepts and residual variances of the five indicators, OH, QoL and FC, PA and FA, are constrained to be equal across the two time points; the mean of the latent variable is set to zero at t = 1 and freely estimated at t = 2
  3. bAfter removing the equality constraints between the PA loadings