Bravais-Pearson correlation coefficients for retest reliability
| VAS pain (T1) r N | VAS pain (T2) r N | VAS pain (T3) r N | VAS pain (T3: 6–13) r N | NRS pain (T1) r N | NRS pain (T2) r N | NRS pain (T3) r N | NRS pain (T3: 6–13) r N | VRS pain (T1) r N | VRS pain (T2) r N | VRS pain (T3) r N | VRS pain (T3: 6–13) r N | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| VAS pain (T1) | 0.95*** 159 | 0.82*** 146 | 0.77*** 75 | |||||||||
| VAS pain (T2) | 0.86*** 144 | 0.79*** 75 | ||||||||||
| NRS pain (T1) | 0.98*** 163 | 0.90*** 154 | 0.89*** 79 | |||||||||
| NRS pain (T2) | 0.89*** 156 | 0.90*** 80 | ||||||||||
| VRS pain (T1) | 0.90*** 158 | 0.80*** 149 | 0.78*** 76 | |||||||||
| VRS pain (T2) | 0.80*** 148 | 0.83*** 74 |
Correlation coefficients for each pain scale in view of retest reliability. Retest reliability may be assumed with coefficients of r≥0.70.
Significant correlations are flagged, whereas ***p<0.001.
NRS, numerical rating scale; VAS, visual analogue scale; VRS, verbal rating scale.