Table 1.

Time of disease progression (since patient awareness of development of symptoms and/or neurological deficits).

	Frequency	Percent	Valid Percent
Days	2	3.6	3.6
Weeks	9	16.4	16.4
Months	34	61.8	61.8
Years	10	18.2	18.2
Total	55	100.0	100.0