Table 3 Cronbach’s alpha (α), retest reliability, and Pearson correlations with EQ-5D-5L, FARS-ADL, and the caregiver questionnaire
Items | Cronbach’s α | Retest [95% CI] | EQ-5D-5L [95% CI] | FARS-ADL [95% CI] | Caregivers [95% CI] | |
|---|---|---|---|---|---|---|
General QoL and attitude to disease | 6 | 0.85 | 0.86 [0.79, 0.91] | 0.37 [0.25, 0.48] | −0.18 [−0.30, −0.06] | 0.64 [0.36, 0.81] |
Mobility and leisure time | 6 | 0.80 | 0.83 [0.74, 0.89] | 0.52 [0.42, 0.61] | −0.59 [−0.67, −0.50] | 0.75 [0.53, 0.87] |
Medical care | 4 | 0.80 | 0.78 [0.67, 0.85] | 0.12 [−0.01, 0.25] | −0.05 [−0.17, 0.08] | 0.72 [0.47, 0.85] |
Social life and occupation/work | 5 | 0.60 | 0.83 [0.74, 0.89] | 0.30 [0.17, 0.41] | −0.22 [−0.34, −0.09] | 0.71 [0.47, 0.85] |
Associated symptoms | 4 | 0.57 | 0.86 [0.78, 0.90] | 0.34 [0.22, 0.45] | −0.45 [−0.55, −0.34] | 0.82 [0.65, 0.91] |
Total score | 25 | 0.85 | 0.86 [0.79, 0.91] | 0.53 [0.42, 0.61] | −0.46 [−0.55, −0.35] | 0.65 [0.38, 0.81] |