Demographic data of 43 patients with primary Sjögren's syndrome
| No | Min | Max | Mean | SD | |
|---|---|---|---|---|---|
| ESR, Erythrocyte sedimentation rate; Fatigue index, total score of Multidimensional Fatigue Inventory, a higher score indicates a higher level of fatigue (range 20–100). | |||||
| Age (years) | 43 | 23 | 80 | 51.8 | 14.1 |
| Disease duration (years) | 40 | 1 | 30 | 7.9 | 8.1 |
| Schirmer (mm/5 minutes) | 40 | 0 | 35 | 8.7 | 10.1 |
| ESR (mm/1st h) | 41 | 11 | 110 | 37.8 | 25.1 |
| Fatigue index | 40 | 21 | 89 | 60.6 | 18.0 |