Table 5.
Ethnicity and Autoantibody Distribution Using Clustering by Clinical Criteria
| Cluster 1 (N=68) | Cluster 2 (N=82) | Cluster 3 (N=50) | P-value | |
|---|---|---|---|---|
| Ethnicity (N,%*) | 0.03 | |||
| Aboriginal | 3 (33) | 5 (56) | 1 (11) | |
| Asian | 32 (51) | 21 (33) | 10 (16) | |
| South Asian | 8 (25) | 15 (47) | 9 (28) | |
| Black | 9 (41) | 11 (50) | 2 (9) | |
| Latino/Hispanic | 3 (33) | 3 (33) | 3 (33) | |
| White | 13 (20) | 28 (43) | 24 (37) | |
| Autoantibodies | ||||
| ANA | 68 (100) | 79 (96) | 48 (96) | 0.22 |
| dsDNA | 63 (93) | 51 (62) | 18 (36) | <0.001 |
| Anti-Smith | 25 (37) | 26 (32) | 14 (28) | 0.61 |
| Anti-RNP | 26 (38) | 32 (39) | 16 (32) | 0.68 |
| Anti-Ro | 31 (46) | 27 (33) | 11 (22) | 0.03 |
| Anti-La | 17 (25) | 14 (17) | 7 (14) | 0.31 |
| Anticardiolipin Antibodies | 37 (54) | 36 (44) | 15 (30) | 0.03 |
| Lupus Anticoagulant | 9 (13) | 24 (29) | 4 (8) | 0.004 |
*
The percentage listed is that of that ethnic group. For example, South Asian patients in Cluster 1 – there were 8 patients, which represents 25% of all South Asian patients in the study.