Table 1

Epidemiological studies on myasthenia gravis 1912–97. Surveys with more than 50 cases are included

First author Year Region No Population Incidence Prevalence
Storm-Mathisen3 4 1912–52Norway903700000121
Garland5 1955Yorkshire, UK603500000526
Giagheddu6 1961Sardinia, Italy11015000002.67.7
Oosterhuis7 1965Amsterdam, Netherlands738500003.153
Giagheddu6 1971Sardinia, Italy11015000002.617.6
Pirskanen8 1976Finland2644700000ND5.6
Storm-Mathisen9 1981Norway4583700000490
Phillips10 1984Virginia, USA1125500009.1142
Giagheddu6 1986Sardinia, Italy11015000002.645
Micaglio11(abstract)1987North east Italy1281820000ND70.3
Somnier12 13 1987Eastern Denmark22923200004.477
Yu14 1987Hong Kong2625610000453.5
Christensen15(abstract)1990Western Denmark2902800000578
Lavrnic16 1992Belgrade, Yugoslavia12414950007.1121.5
Kyriallis17 1994Cyprus10560000015175
Tola18 1994Emilia Romagna, Italy86292500014.7ND
Robertson19 1997Cambridgeshire, UK10068500011150