Table 3 Comparative matrix of model fit indices for the two- and three-factor structures at the two postpartum parenting periods.

From: Factor structure of the Parenting Stress Index-Short Form used in the Japan Environment and Children’s Study

 

1.5 yearsa

2.5 yearsb

Two-factor

Three-factor

Two-factor

Three-factor

df(p)

151

171

151

149

SRMR

0.060

0.044

0.060

0.045

AGFI

0.878

0.930

0.872

0.924

RMSEA (90% CI)

0.083 (0.082–0.083)

0.063 (0.062–0.064)

0.085 (0.085–0.086)

0.066 (0.065–0.067)

CFI

0.817

0.911

0.882

0.909

NNFI

0.793

0.895

0.797

0.893

  1. χ2 chi square, df degrees of freedom, SRMR standardized root mean square residual, GFI goodness-of-fit Index, AGFI adjusted goodness-of-fit index, RMSEA (90%CI) root mean square error of approximation with 90% confidence interval, CFI Bentler comparative fit index, NNFI Bentler-Bonett non-normed fit index.
  2. a = 79,282 mothers, b = 75,831 mothers.
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