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Table 5 Difference statistics for measurement invariance testing

From: The influence of gestational age in the psychometric testing of the Bernese Pain Scale for Neonates

Model

Restriction

df

∆ RMSEA

∆ CFI

∆ TLI

∆χ2

∆ df

p (∆χ2)

Heel stick phases of measurement points t1-t5

WRLInv

440

0

0.000

0.002

39

40

0.531

OLInv

448

0

− 0.015

− 0.015

115

48

0.000

All phases and measurement points

WRLInv

4340

0

−0.007

− 0.006

123

40

0.000

OLInv

4348

0

−0.024

− 0.025

343

48

0.000

  1. Note. WRLInv = within-rater loadings invariance; OLInv = overall loadings invariance; df = degrees of freedom; RMSEA = root mean squared error of approximation; CFI = Bentler’s Comparative Fit Index; TLI = Tucker-Lewis Indices; ∆χ2 = Satorra-Bentler 2010 χ2-test statistic