Table 1.
Demographic and clinical features of 141 patients with primary Sjögren syndrome
| Number | Percentage | |
| Females/Males | 114/27 | 80.9/19.1 |
| Age (range), years | 48 (39–60) | |
| Median disease duration (IQR), years | 2.49 (0.98–6.12) | |
| Synovitis (objective swelling) | 44 | 31.2 |
| Extra-glandular involvement (skin, lung, kidney, or vasculitis) | 81 | 57.4 |
| Median erythrocyte sedimentation rate (IQR), mm/1st hour | 27 (17–38) | |
| Median C-reactive protein (IQR), mg/dL | 0.57 (0.31–0.9) | |
| Rheumatoid factor | 94 | 66.7 |
| Anti-CCP antibodies | 14 | 9.9 |
| Anti-nuclear antibodies | 134 | 95 |
| Anti-La (SSB) antibodies | 55 | 39.1 |
| Anti-Ro (SSA) antibodies | 115 | 81.6 |
| Focus score of greater than 1 | 94 | 67.1 |
Demographic characteristics and continuous data are expressed as median (interquartile range, IQR). Categorical data are expressed as absolute frequency and percentage. Anti-CCP, cyclic citrullinated peptide antibody.