Descriptive epidemiology of XXXX in Finland.

@entity1 @entity3605 @entity13895 @entity204 @entity307
In 1974-84 30 @entity1 died with a diagnosis of @entity3605 ( @entity3605 ) in Finland. Sixteen of the @entity1 were pathologically confirmed and 14 were probable cases; 6 were familial (20%). One further familial @entity1 was alive at the end of 1984. The median age of the 30 @entity1 at @entity204 was 59.5 years (range 46-73 years). The familial @entity1 were significantly younger than sporadic cases (median and range 49.5 and 46-57 versus 61.5 and 51-73; P less than 0.01). Only 5 of the 24 sporadic @entity1 were @entity1 (male to female ratio 1:3.8). The annual number of new cases as well as the @entity204 rate increased in the late 1970's (annual @entity204 rate 0.57 per million in 1974-84 and 0.91 in 1979-84). This probably reflects the growing awareness of @entity3605 among neurologists, rather than a real increase of the incidence and @entity204 rate. Annual age-specific @entity204 rate @entity307 million population in 1974-84 reached a peak value of 2.57 in the age group of 60-64 years. In @entity13895 the age-specific @entity204 rate of @entity1 was higher than that of @entity1 in all age groups. A chronic medical condition, precedent or concomitant with @entity3605 , was seen in 15 @entity1 .
