Table 1.
Measurement Invariance Analysis: Multigroup CFA (n = 1,629)
| Overall model fit constrained modela | Change in model fitb | ||||
|---|---|---|---|---|---|
| CFI | TLI | RMSEA | ΔCFI | ΔRMSEA | |
| SMU intensity | .989 | .989 | .047 | .009 | −.010 |
| SMU problems | .963 | .957 | .034 | −.007 | .006 |
| Attention deficits | .932 | .935 | .073 | .009 | .007 |
| Impulsivity | .987 | .987 | .031 | .004 | .002 |
| Hyperactivity | .874 | .879 | .122 | .019 | .026 |
SMU = social media use; CFA = confirmatory factor analysis; CFI = comparative fit index; TLI = Tucker–Lewis index; RMSEA = root mean square error of approximation.
a
Multigroup CFA model where item loadings and intercepts/thresholds were constrained to be equal over time.
b
Compared to multigroup CFA model where item loadings and intercepts/thresholds were free to vary over time.