Table 1 Baseline characteristics of 8200 study subjects based on evidence of AVN by MRI
AVN Cases (evidence of AVN on MRI) n = 83 | Non-Cases (without AVN on MRI) n = 8117 | |
|---|---|---|
Mean age ± SD | 50.4 ± 15.1 | 52.4 ± 15.4 |
Females, n (%) | 50 (60.2) | 4541 (55.9) |
Race, n % | ||
White | 57 (68.7) | 5975 (73.6) |
Black | 13 (15.7) | 542 (6.7) |
Hispanic | 4 (4.8) | 458 (5.6) |
Asian | 4 (4.8) | 145 (1.8) |
Other | 0 (0) | 64 (0.8) |
Not Recorded | 5 (6.0) | 933 (11.5) |
Co-morbiditiesa, n (%) | ||
Rheumatoid Arthritis | 5 (6.0) | 205 (2.5) |
Osteoarthritis | 35 (42.2) | 2410 (29.7) |
Systemic Lupus Erythematosus | 8 (9.6) | 29 (0.4) |
HIV | 0 (0) | 16 (0.2) |