Table 3.
Measurement invariance of the BCS from baseline to quit day
| Models | χ2 | df | CFI | RMSEA | SRMR | ΔCFI | ΔRMSEA | ΔSBχ2 | Δdf | p |
|---|---|---|---|---|---|---|---|---|---|---|
| 1. Configural | 1281.14 | 569 | .88 | .05 | .08 | -- | -- | -- | -- | -- |
| 2. Metric: Item Level |
1296.66 | 584 | .88 | .05 | .08 | .000 | .000 | 14.43 | 15 | .49 |
| 3. Metric: First Order Level |
1301.42 | 586 | .88 | .05 | .08 | .000 | .000 | 4.95 | 2 | .08 |
| 4. Scalar: Item Level |
1341.69 | 601 | .88 | .05 | .08 | .005 | .000 | 40.79 | 15 | <.001 |
| 5. Scalar: First Order Level |
1364.60 | 603 | .87 | .05 | .08 | .003 | .000 | 61.06 | 2 | <.001 |
Note. df = degrees of freedom; CFI = comparative fit index; RMSEA = root mean square error of approximation; SRMR = standardized root-mean-square residual; ΔCFI = change in comparative fit index from previous model; ΔRMSEA = change in root mean square error of approximation from previous model; ΔSBχ2 = change in Sattora-Bentler scaled X2 from previous model; Δdf = change in degrees of freedom from previous model.