Table 1.

Demographic details. Mean age (standard deviation, ranges) and length of illness are reported in years. Mean unilateral weakness (standard deviation, ranges) is reported in percent. Both groups are subdivided at age 50, 25 subjects per subgroup in the controls, 9 younger UW and 16 older UW.

Group	Age	Unilateral weakness	Length of illness	Females/ Males
Controls	49.1 (15.9, 21.0 to 89.2)			29F/ 21 M
Younger Older	35.4 (7.4, 21.0 to 47.5) 62.9 (8.2), 50.9 to 89.2)			12F/13M 17F/8M
UW	52.5 (13.9, 24.2 to 77.5)	48.0 (25.0, 20 to 100)	2.3 (3.1, 0.01 to 13.0)	11F/ 14M
Younger Older	37.5 (8.4, 24.2 to 48.3) 61.0 (7.7, 51.2 to 77.5)	42 (20, 25 to 80) 51 (29, 20 to 100)	0.95 (1.0, 0.16 to 3.5) 3.0 (3.5, 0.01 to 13.0)	2F/7M 9F/7M