From: Psychometric properties of Turkish version of Jenkins sleep scale in fibromyalgia syndrome
| Convergent validity | Spearman’s rho | Significance (p) |
|---|---|---|
| PSQI | 0.79 | < 0,0005 |
| VAS-pain | 0.43 | < 0.0005 |
| FSS | 0,42 | < 0,0005 |
| EQ-5D Index | -0,43 | < 0,0005 |
| BDI | 0,53 | < 0,0005 |
| FIQ | 0,41 | < 0,0005 |
| Discriminant validity | ||
| Disease duration | 0.052 | 0.647 |
| Age | 0.213 | 0.056 |
| BMI | −0.001 | 0.994 |