Table 4 Model Fit for Multiple Groups by the Relationship Type Models and Measurement Invariance Comparisons.

From: Psychometric functioning, measurement invariance, and external associations of the Relationship Assessment Scale in a sample of Polish Adults

Model

chi2 (df)

RMSEA [90% CI]

SRMR

CFI

TLI

Δ χ2 S-B

Δ CFI

Δ RMSEA

Decision

Baseline model for informal relationships (n = 1181)

168.49*** (14)

0.059 [0.051, 0.067]

0.037

0.998

0.997

Pass

Baseline for formal relationships (n = 454)

29.078** (14)

0.030 [0.0, 0.045]

0.036

0.999

0.999

Pass

Poland (informal relationships, n = 401; formal relationships, n = 332)

Configural invariance

126.78*** (28)

0.061 [0.051, 0.072]

0.034

0.998

0.997

Pass

Metric invariance

95.52*** (34)

0.053 [040, 0.065]

0.034

0.998

0.998

3.33 (6)

0

–0.008

Pass

Scalar invariance

118.12*** (54)

0.041 [0.031, 0.052]

0.093

0.998

0.999

18.26 (20)

0

–0.012

Pass

Hungary (informal relationships, n = 596; formal relationships, n = 107)

1 group model

119.282*** (14)

0.063 [0.053, 0.074]

0.042

0.998

0.996

Pass

U.S. (informal relationships, n = 184)

1 group model

57.52** (14)

0.083 [0.061, 0.106]

0.055

0.997

0.995

Pass

  1. CFI comparative fit index, TLI Tucker–Lewis index, RMSEA root mean square error of approximation, CI confidence interval, df degrees of freedom, SRMR squared root mean residuals, S–B Satorra–Bentler correction, Δ comparisons of nested model: configural-metric, metric-scalar.
  2. *p < 0.05, **p < 0.01, ***p < 0.001.