Table 6.
Mode differences in means and variances for depression and activity by estimation approach: sum scores, assuming equal measurement error (full scalar equivalence) and controlling for mode effects on measurement (partial scalar equivalence)
| Sum | Scalar eq. | Partial eq. | |||
|---|---|---|---|---|---|
| CESD | Mean | TEL | 0.00 | 0.00 | 0.00 |
| FTF | −0.03 | −0.05 | −0.05 | ||
| Web | 0.24 | 0.44 | 0.16 | ||
| Variance | TEL | 3.67 | 14.74 | 15.29 | |
| FTF | 3.51 | 14.47 | 15.03 | ||
| Web | 4.58 | 17.16 | 15.78 | ||
| Physical activity | Mean | TEL | 0.00 | 0.00 | 0.00 |
| FTF | 0.03 | 0.02 | 0.02 | ||
| Web | −0.08 | −0.05 | −0.01 | ||
| Variance | TEL | 6.21 | 1.51 | 1.40 | |
| FTF | 6.11 | 1.45 | 1.35 | ||
| Web | 6.64 | 1.77 | 2.07 |