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Convergent validity: Pearson correlation coefficients between the three pain scale in all the subjects
| Scales | Level of convergent validity | |||
|---|---|---|---|---|
| S1 | S2 | |||
| RA1 | S1 | |||
| S2 | 0.707** | Very good | ||
| S3 | 0.750** | 0.749** | Very good | |
| RA2 | S1 | |||
| S2 | 0.786** | Very good | ||
| S3 | 0.757** | 0.738** | Very good | |
**P-value <0.01
