Laboratory assessment of 105 patients with primary Sjögren's syndrome
| 1976–1992 (n=50) | 1993–2005 (n=55) | Total (n=105) | p Value | ||||
|---|---|---|---|---|---|---|---|
| N | Value* | N | Value* | N | Value* | ||
| Rheumatoid factor, positive (%) | 37 | 14 (38) | 45 | 32 (71) | 82 | 46 (56) | 0.002 |
| Antinuclear antibodies, positive (%) | 37 | 20 (54) | 52 | 42 (81) | 89 | 62 (70) | 0.007 |
| Anti-SSA, positive (%) | 17 | 7 (41) | 48 | 38 (79) | 65 | 45 (69) | 0.004 |
| Anti-SSB, positive (%) | 18 | 6 (33) | 48 | 30 (63) | 66 | 36 (55) | 0.034 |
| Hypergammaglobulinaemia, present (%) | 38 | 16 (42) | 44 | 26 (59) | 82 | 42 (51) | 0.12 |
| Histopathology, available (%) | 0 | – | 6 | 3 (50) | 6 | 3 (50) | – |
N is the number of patients with parameter reported in the medical records.
*Value is N (%) or median (minimum, maximum). Percentages are calculated based on available N.