Table 5.
LBCRS features: Internal consistency reliability, score distributions, and interscore correlations
| Domain | Items | Reliability Cronbach α (95% CI) |
Score features and distribution |
% floor | % ceiling | Interscale correlation Spearman r |
|||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Range | Mean | Median | SD | Motor | Nonmotor | Total | |||||
| Motor | 4 | 0.73 (0.66–0.79) | 0–4 | 1.2 | 1.0 | 1.3 | 29.9 | 6.0 | 1 | ||
| Nonmotor | 6 | 0.57 (0.47–0.67) | 0–6 | 1.8 | 2.0 | 1.4 | 11.5 | 1.7 | 0.39 | 1 | |
| Total | 10 | 0.72 (0.65–0.77) | 0–10 | 2.9 | 2.0 | 2.3 | 9.4 | 1.3 | 0.81 | 0.85 | 1 |
Abbreviations: LBCRS, Lewy body composite risk score; CI, confidence interval; SD, standard deviation.
NOTE. % floor is the percentage of patients with the lowest (best) possible score. % ceiling is the percentage of patients with the highest (worst) possible score.