From: Risk for rheumatic disease in relation to ethnicity and admixture
 |  |  | Prevalence/1000 | ||
---|---|---|---|---|---|
Ethnic origin | Location | Age (years) | Males | Females | Both |
Pima | Arizona, USA [31] | >20 | 10 | 31 | Â |
Yakima | Washington, USA [33] | 18–79 | N/A | 34 |  |
European | Minnesota, USA [35] | 35–85 | 7.4 | 14 |  |
European and Afro-American | NHANES, USA [30] | 18–79 | 6 | 15 |  |
European | Manchester, UK [36] | 45–65 |  |  | 8 |
Afro-Caribbean | Manchester, UK [36] | 44–66 |  |  | 2.9 |