Table 3.
Concurrent validity (Spearman Rank Correlation Coefficient) of the NRS-FRS and NRS at test and retest
| Criterion measure | Test | Retest |
|---|---|---|
| NRS-FRS (95 % CI) | NRS-FRS (95 % CI) | |
| NRS | 0.85* (0.75–0.91) | 0.84* (0.73–0.91) |
*P < 0.01
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