Table 5.

Epidemiological studies of MG in different countries

First author	fear	Region	Cases	Population	Incidence per million/year	Prevalence per million
Storm-Mathisen [16]	1912–1952	Norway	90	3,700,000	1	21
Garland [17]	1955	Yorkshire, UK	60	3,500,000	5	26
Giagheddu [18]	1961	Sardinia, Italy	110	1,500,000	2.6	7.7
Oosterhuis [19]	1965	Amsterdam, The Netherlands	73	850,000	3.1	53
Giagheddu [18]	1971	Sardinia, Italy	110	1,500,000	2.6	17.6
Pirskanen [20]	1976	Finland	264	4,700,000	n.a.	5.6
Storm-Mathisen [21]	1981	Norway	458	3,700,000	4	90
Phillips [22]	1984	Virginia, USA	112	550,000	9.1	142
Giagheddu [18]	1986	Sardinia, Italy	110	1,500,000	2.6	45
Somnier [23, 24]	1970–1988	Eastern Denmark	229	2,320,000	4.4	77
Yu [25]	1987	Hong Kong	262	5,610,000	4	53.5
Christensen [26]	1990	Western Denmark	290	2,800,000	5	78
Lavrnic [27]	1992	Belgrade, Yugoslavia	124	1,495,000	7.1	121.5
Tola [28]	1994	Emilia Romagna, Italy	86	2,925,000	14.7	n.a.
Robertson [29]	1997	Cambridgeshire, UK	100	685,000	11	150
Poulas [15]	1992–1997	Greece	843	10,475,878	7.4	70.63
Oopik [30]	1997	Estonia	70	1,462,130	n.a.	78
Somnier [6]	1995–1999	Eastern Denmark	241	2,300,000	3.5 vs. 20.81	n.a.
Lai (present study);	2000–2007	Taiwan	5,211	22,958,360	21	140

n.a. = Not available.

¹Early and late onset, respectively.