Reduced incidence of XXXX in clinically diagnosed @entity303 of the Alzheimer type.

@entity1 @entity308 @entity303 @entity73 @entity195 @entity1002
Although it is generally held that about 10% of the population is left-handed, reported figures vary widely due to differences in handedness classification criteria and subject characteristics. Among those population studies that have used the same handedness classification criteria, a consistent relationship between increasing right-hand preference and increasing age has been reported. One recent study of @entity195 ( @entity195 ) reported a higher incidence of @entity1002 in early onset relative to late onset cases. In the present study we examined handedness patterns in three elderly groups; normal (N = 217), @entity308 (N = 73), and @entity195 (N = 114). Our results indicated a reduced frequency of @entity1002 in @entity195 (2.6%) relative to control (11.1%) and @entity308 (13.7%) groups. Within the limited age range we studied (60-80 years), no relationships were found between age and handedness preference either within or across the groups. Furthermore, for the @entity195 group there was no relationship between severity of @entity73 and strength of handedness. Our results suggest that compared to right handers, left handers are less vulnerable to the cognitive changes associated with @entity195 . Nevertheless it is also possible that left handers are overrepresented among early onset @entity303 @entity1 and die before entering the pool of @entity195 @entity1 . Further work is required to determine if early and late onset @entity195 are associated with different incidences of @entity1002 .
