Internal consistency and test-retest reliability of the MDASI-CML and correlation of MDASI-CML ratings with single-item QOL scores
| Scale or subscale . | Cronbach coefficient α internal consistency . | Test-retest* . | Mean . | SD . | QOL, Mean (SD) . | Correlation . | . | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Test sample, n = 152 . | Retest sample, n = 140 . | Intraclass correlation . | P . | Pearson . | Spearman . | P . | ||||
| Core symptoms | 0.91 | 0.90 | 0.92 | <.001 | 1.54 | 1.45 | 8.20 (1.87) | –.315 | –.411 | <.001 |
| CML module symptoms | 0.80 | 0.79 | 0.89 | <.001 | 1.49 | 1.39 | 8.20 (1.87) | –.209 | –.269 | <.01 |
| Total symptoms | 0.93 | 0.93 | 0.92 | <.001 | 1.52 | 1.38 | 8.20 (1.87) | –.289 | –.382 | <.001 |
| Interference | 0.95 | 0.94 | 0.93 | <.001 | 1.65 | 1.94 | 8.20 (1.87) | –.364 | –.436 | <.001 |
| Scale or subscale . | Cronbach coefficient α internal consistency . | Test-retest* . | Mean . | SD . | QOL, Mean (SD) . | Correlation . | . | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Test sample, n = 152 . | Retest sample, n = 140 . | Intraclass correlation . | P . | Pearson . | Spearman . | P . | ||||
| Core symptoms | 0.91 | 0.90 | 0.92 | <.001 | 1.54 | 1.45 | 8.20 (1.87) | –.315 | –.411 | <.001 |
| CML module symptoms | 0.80 | 0.79 | 0.89 | <.001 | 1.49 | 1.39 | 8.20 (1.87) | –.209 | –.269 | <.01 |
| Total symptoms | 0.93 | 0.93 | 0.92 | <.001 | 1.52 | 1.38 | 8.20 (1.87) | –.289 | –.382 | <.001 |
| Interference | 0.95 | 0.94 | 0.93 | <.001 | 1.65 | 1.94 | 8.20 (1.87) | –.364 | –.436 | <.001 |
The time interval between test and retest was 2 weeks.