Demographics of subjects with SLE and ILE based on 2012 SLICC and 1997 ACR criteria
| SLESLICC-only* (n=178) | SLEACR-only† (n=85) | SLEboth‡ (n=3312) | ILE§ (n=291) | |
|---|---|---|---|---|
| Sex | ||||
| Female, n (%) | 160 (89.9) | 74 (87.0) p=0.494 | 2976 (89.9) p=0.989 | 255 (87.6) p=0.458 |
| Age, years | ||||
| Average (range) | 43.7 (10–81) | 45.4 (12–79) p=0.345 | 42.0 (8–82) p=0.118 | 47.5 (9–80) p=0.002 |
| Race, n (%) | ||||
| European American | 89 (50.0) | 52 (61.2) p=0.090 | 1466 (44.3) p=0.134 | 165 (56.7) p=0.158 |
| African-American | 44 (24.7) | 14 (16.5) p=0.133 | 1079 (32.6) p=0.030 | 69 (23.7) p=0.804 |
| Hispanic | 12 (6.7) | 5 (5.9) p=0.791 | 239 (7.2) p=0.811 | 12 (4.1) p=0.216 |
| Asian | 10 (5.6) | 2 (2.4) p=0.250 | 128 (3.9) p=0.245 | 10 (3.4) p=0.261 |
| American Indian | 2 (1.1) | 5 (5.9) p=0.044 | 99 (3.0) p=0.165 | 10 (3.4) p=0.144 |
| Mixed | 21 (11.8) | 7 (8.2) p=0.383 | 276 (8.3) p=0.109 | 22 (7.6) p=0.126 |
| Other¶ | 0 (0.0) | 0 (0.0) p=1.000 | 25 (0.8) p=0.985 | 3 (1.0) p=0.985 |
Bold p values are significant (p<0.05) for comparison with SLESLICC-only.
*SLESLICC-only were classified with SLE by SLICC criteria, but not ACR criteria.
†SLEACR-only were classified with SLE by ACR criteria, but not SLICC criteria.
‡SLEboth were classified with SLE by both SLICC and ACR criteria.
§Patients with ILE met three ACR criteria and were not classified with SLE by SLICC standards.
¶Other includes Pacific Islander and unknown.
ACR, American College of Rheumatology; ILE, incomplete lupus erythematosus; SLICC, Systemic Lupus International Collaborating Clinics.