Site of survey [ref.] | Location | Age (Years) | Ethnic | Time | Number | Prevalence (%) | |||
---|---|---|---|---|---|---|---|---|---|
 |  |  |  |  |  | AS | PsA | ReA | uSpA |
Taiwan [4] | Island | ≥17 | Han | 1974 | 5,629 | 0.2 |  |  |  |
Beijing [9] | Rural | ≥20 | Han | 1987 | 4,192 | 0.26 |  |  |  |
Beijing [31] | Urban | ≥16 | Han | 1999 | 1,982 | 0.3 | 0.10 |  | 1.21 |
Taiyuan [40] | Urban | ≥16 | Han | 2004 | 3,915 | 0.2 | 0.05 |  | 0.64 |
Shandong [25] | Rural | ≥16 | Han | 1996 | 5,055 | 0.22 | 0.04 | 0.02 |  |
Shanghai [3] | Urban | ≥16 | Han | 1992 | 2,010 | 0.20 |  |  |  |
Taiwan [19] | Urban | ≥20 | Han | 1992 | 3,000 | 0.4 |  |  |  |
Taiwan [19] | Suburban | ≥20 | Han | 1992 | 3,000 | 0.19 |  |  |  |
Taiwan [19] | Rural | ≥20 | Han | 1992 | 2,998 | 0.54 |  |  |  |
Shantou [8] | Rural | ≥16 | Han | 1985 | 10,647 | 0.20 |  |  |  |
Shantou [9] | Rural | ≥20 | Han | 1987 | 5,058 | 0.26 |  |  |  |
Shantou [23] | Urban | ≥16 | Han | 1995 | 2,040 | 0.2 |  |  |  |
Shantou [30] | Suburban | ≥16 | Han | 1999 | 2,029 | 0.3 | 0.05 |  | 1.0 |
Military [35] | 15 provinces | 17 to 40a | 11 ethnics | 2000 | 20,068 | 0.24 | Â | Â | Â |
Heilongjiang [12] | Mountain | ≥18 | H and Mac | 1989 | 2,311 | 0.09 |  |  |  |
Changchun [6] | Factory | ≥20b | H and Mac | 1980 | 36,097 | 0.06 | 0.01 |  |  |
Ningxia [14] | Highland | ≥18 | H and Mud | 1990 | 10,420 | 0.10 |  |  |  |