From: Inflammatory bowel disease serologies in ankylosing spondylitis patients: a pilot study
 | AS patients | Controls |
---|---|---|
Age in years (mean, range) | 36.5, 19-61 | 30.8, 18-104 |
Disease duration in years (mean, range) | 10.3, 0.12-43 | Not applicable |
Male (%) | 62% | 42% |
HLA B27 (%) | 84% | Not available |
Ethnicity | Caucasian 80% African American 2.5% Asian 3.8% Hispanic 3.8% Caucasian and Hispanic 8.8% African American and Caucasian 1% | Caucasian 100% |