Table 1. Demographics and clinical characteristics of the pSS patients and healthy control subjects.
| Test group | Validation group | |||
|---|---|---|---|---|
| Characteristic | pSS patients | HCs | pSS patients | HCs |
| Number of samples | 20 | 25 | 12 | 13 |
| Age ( ± s) | 39.7±10.9 | 40.6±12.8 | 41.4±12.2 | 44.1±12.7 |
| Sex (F/M) | 17/3 | 23/2 | 10/2 | 12/1 |
| Anti-SSA/Ro- antibody positivity | 16/20 | 9/11 | ||
| Anti-SSB/La- antibody positivity | 3/20 | 1/11 | ||
| Immunoglobulin G positivity | 12/20 | 6/12 | ||
| Labial gland biopsy positivity | 14/17 | 9/10 | ||
pSS- primary Sjögren’s syndrome, HCs- healthy controls, SSA- Sjögren’s syndrome-related antigen A, SSB- Sjögren’s syndrome-related antigen B, p < 0.05 for Wilcoxon test for pSS patients and HCs.