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Results of relative and absolute reliability measures for the Persian Functional Rating Index in athletes with neck pain (n = 50)
| Scale | Mean ± SD |
d (SD) | ICCagreement (95%CI) | SEM | SDC | |
| Test | Retest | |||||
| PFRI | 32.15 ± 19.04 | 30.70 ± 15.90 | 1.45 (4.95) | 0.96 (0.93-0.98) | 3.2 | 8.84 |
d: Mean difference of the test and retest scores; ICC: Intraclass correlation coefficient; SEM: Standard error of measurement; SDC: Smallest detectable change; PFRI: Persian Functional Rating Index.
