Table 1.
Study | Location | Years studied | Total number of achalasia patients | Prevalence rate (per 100000) | Incidence rate (per 100000/year) |
Howard et al[12] | Edinburgh, Scotland | 1986-1991 | Not reported | Not reported | 0.81 |
Birgisson et al[13] | Iceland | 1952-2002 | 62 | 8.7 | 0.55 |
Sadowski et al[14] | Alberta, Canada | 1995-2008 | 463 | 2.518 | Not reported |
10.829 | 1.639 | ||||
Mayberry et al[15] | Great Britain and Ireland | 1972-1983 | 6306 | Not reported | Not reported |
Scotland | 583 | 11.2 | 1.1-1.26 | ||
Wales | 197 | 7.1 | Not reported | ||
Northern Ireland | 153 | 9.8 | Not reported | ||
Republic of Ireland | 453 | 13.4 | Not reported | ||
England | 4920 | 10.8 | 0.97 | ||
Mayberry et al[16] | Cardiff, Wales | 1926-1977 | 48 | Not reported | 0.4 |
Mayberry et al[17] | Nottingham, England | 1966-1983 | 53 | 8.0 | 0.51 |
Arber et al[18] | Israel | 1973-1983 | 162 | 7.91 | 0.83 |
12.62 | 1.154 | ||||
Earlam et al[19] | Rochester, United States | 1925-1964 | 11 | Not reported | 0.6 |
Galen et al[20] | Virginia, United States | 1975-1980 | 31 | Not reported | 0.6 |
Mayberry et al[21] | New Zealand | 1980-1984 | 152 | Not reported | 1.0 |
Stein et al[22] | Zimbabwe | 1974-1983 | 25 | Not reported | 0.03 |
Farrukh et al[23] | Leicester, England | 1986-2005 | 14 | Not reported | 0.895 |
Ho et al[24] | Singapore | 1989-1996 | 49 | 1.77 | 0.29 |
Gennaro et al[25] | Veneto, Italy | 2001-2005 | 365 | Not reported | 1.59 |
Rate in 1973 only;
Rate in 1983 only;
Rate between 1973-1978;
Rate between 1979-1983 only;
Rate only applicable for South Asian population of region;
Rate reported as 1.1 for men and 1.2 for women;
Rate only applicable to Oxford region of England;
Rate in 1996 only;
Rate in 2007 only.