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Reliability of the Short-Form Neck Disability Index (SF-NDI) in the sample 2 (n = 51)
| Test | Retest | ICC | 95% CI | SEM (score) | MDC (score) | Cronbach's alpha |
|---|---|---|---|---|---|---|
| 3.60 (3.48) | 3.60 (3.80) | 0.844 | 0.742, 0.908 | 1.37 | 3.81 | 0.778 |
Test and retest shown as mean (standard deviation). ICC: intraclass correlation coefficient; CI: confidence interval; SEM: standard error of measurement; MDC: minimum detectable change
