TABLE 4.
Tests of Measurement Invariance of the PPSM across Gender Groups
| Model | χ2 (df) | CFI/TLI | RMSEA | SRMR | p valuea |
|---|---|---|---|---|---|
| Eight-item PPSM | |||||
| Configural invariance | 69.11* (40) | .97/.96 | .07 | .03 | — |
| Weak factorial invariance | 85.30* (47) | .96/.96 | .07 | .06 | .01 |
| Strong factorial invariance | 97.53* (54) | .96/.96 | .07 | .05 | — |
| Strict factorial invariance | 106.65* (62) | .96/.96 | .07 | .06 | — |
| Four-item PPSM | |||||
| Configural invariance | 11.16* (4) | .98/.95 | .11 | .02 | — |
| Weak factorial invariance | 15.06* (7) | .98/.96 | .09 | .04 | .30 |
| Strong factorial invariance | 20.04* (10) | .98/.97 | .08 | .04 | .22 |
| Strict factorial invariance | 27.20* (14) | .97/.97 | .08 | .05 | .12 |
Note. CFI = comparative fit index; PPSM = Pediatric Psychological Stress Measure; RMSEA = root mean square error of approximation; SRMR: standardized root mean square residual; TLI = Tucker-Lewis index.
a
χ2 test.
*
p < .05;
male, n = 133; female, n = 150.