Table 4.
Goodness-of-fit indices for measurement invariance of the Strengths and Difficulties Questionnaire across gender and age.
| χ2 | df | CFI | TLI | RMSEA (CI 90%) |
WRMR | ΔCFI | |
|---|---|---|---|---|---|---|---|
| Gender | |||||||
| Male (n = 606) | 607.66 | 258 | .90 | .88 | .05 (.04-.05) | 1.33 | |
| Female (n = 939) | 626.03 | 260 | .91 | .91 | .04 (.03-.04) | 1.32 | |
| Configural invariance | 1261.95 | 520 | .90 | .89 | .04 (.04-.05) | 1.90 | |
| Strong invariance | 1292.48 | 560 | .90 | .90 | .04 (.04-.05) | 1.98 | -.01 |
| Age | |||||||
| 11-15 year-olds (n = 935) | 710.62 | 260 | .90 | .89 | .04 (.04-.05) | 1.42 | |
| 16-19 year-olds (n = 612) | 586.36 | 260 | .90 | .89 | .05 (.04-.05) | 1.31 | |
| Configural invariance | 1290.22 | 520 | .90 | .89 | .04 (.04-.05) | 1.93 | |
| Strong invariance | 1358.05 | 560 | .90 | .89 | .04 (.04-.05) | 2.03 | -.01 |
Note. χ2 = Chi square; df = degrees of freedom; CFI = Comparative Fit Index; TLI = Tucker-Lewis Index; RMSEA = Root Mean Square Error of Approximation; WRMR = Weighted Root Mean Square Residual; CI = Confidence Interval; ΔCFI = Change in Comparative Fit Index.