Table 4.
Measurement invariance of the six-factor SCQ model across sex and over time.
| Models | χ2 | df | CFI | RMSEA | SRMR | ΔCFI | ΔRMSEA |
|---|---|---|---|---|---|---|---|
| Across Sex | |||||||
| 1. Configural | 2323.56 | 1100 | .86 | .07 | .07 | -- | -- |
| 2. Metric | 2343.06 | 1130 | .86 | .07 | .08 | .001 | .005 |
| 3. Scalar | 2423.12 | 1165 | .85 | .07 | .08 | .005 | .000 |
|
| |||||||
| Across Time (Baseline to Quit Week) | |||||||
| 1. Configural | 4197.05 | 2265 | .88 | .04 | .06 | -- | -- |
| 2. Metric | 4269.52 | 2295 | .88 | .04 | .07 | .003 | .001 |
| 3. Scalar | 4378.42 | 2323 | .88 | .04 | .07 | .004 | .000 |
Note. N = 508 baseline, 523 quit week; 15 participants who provided Smoking Consequences Questionnaire data at quit week only were included in tests of measurement invariance test over time. χ2 = Chi-square test; 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.