Average annual incidence rates per 100 000 population adjusted for sex and age
| Author(ref) | Site | Year | Number of cases ascertained | Number of M/F | Population sampled M/F | Age adjusted incidence per 100000 population/y (M/F) | M/F ratio (weighted mean = 1.49) |
|---|---|---|---|---|---|---|---|
| *Door to door survey. | |||||||
| Wender (4) | Poznan, Poland | 1989 | 159 | 78/81 | 625506/672629 | 13/10 | 1.30 |
| Wang (5)* | China, 29 provinces | 1991 | 566 | 327/239 | 1936717/1932445 | 2.1/1.7 | 1.24 |
| Granieri (6) | Ferrara, Italy | 1991 | 394 | 175/219 | 89429/97952 | 9.32/10.65 | 0.88 |
| Kuopio (7) | Southwestern Finland | 1999 | 385 | 187/198 | 92250/104614 | 21.5/11.0 | 1.95 |
| Vines (8) | Navarre, Spain | 1999 | 96 | 63/33 | 259870/263693 | 10.1/4.9 | 2.06 |
| Bower (9) | Olmsted County, MN | 1999 | 154 | 89/65 | 682764/741710 | 13.0/8.8 | 1.48 |
| Mayeux (10) | Northern Manhattan, NY | 1991 | 83 | 36/47 | 72807/110127 | 17.1/11.3 | 1.51 |