Table 1.
Positive outcome of PNC assay and CLIFT in MRG patients
| Diagnosis | PNC+ (%) | CLIFT+ (%) | PNC+CLIFT+ (%) | Total (%) |
|---|---|---|---|---|
| Arthralgia [%] | 2 (5.7) [5.9] | 0 | 0 | 34 (6.4) [100] |
| Connective tissue disease [%] | 3 (8.6) [5.6] | 7 (15.9) [13] | 2 (13.3) [3.7] | 54 (10.2) [100] |
| Dermatological disorder [%] | 0 | 0 | 0 | 17 (3.2) [100] |
| Inflammatory joint disease [%] | 3 (8.6) [2.7] | 8 (18.2) [7.1] | 2 (13.3) [1.8] | 112 (21.2) [100] |
| Osteoarthritis [%] | 6 (17.1) [10.2] | 0 | 0 | 59 (11.2) [100] |
| Non-rheumatic disease [%] | 6 (17.1) [5] | 6 (13.6) [5] | 1 (6.7) [0.8] | 120 (22.7) [100] |
| Soft tissue rheumatism [%] | 1 (2.9) [4] | 0 | 0 | 25 (4.7) [100] |
| Systemic inflammatory disease [%] | 1 (2.9) [4.2] | 2 (4.5) [8.3] | 0 | 24 (4.5) [100] |
| Unspecified [%] | 0 | 0 | 0 | 19 (3.6) [100] |
| SLE [%] | 13 (37.1) [20] | 21 (47.7) [32.3] | 10 (66.7) [15.4] | 65 (12.3) [100] |
| Total | 35 (100) | 44 (100) | 15 (100) | 529 (100) |
CLIFT Crithidia luciliae immunofluorescence test, PNC phagocytosis of necrotic cell material, SLE systemic lupus erythematosus
The different subsets of patients are grouped on the basis of final diagnosis recorded after a median of 4.7 years, as described elsewhere [32]. The percentage of positive laboratory tests is reported in round brackets; the percentage of positive patients in the different subsets is reported in square brackets