Table 1.

Subject demographics and clinical characteristics of all PSP subjects

	Controls (n=20)	PSP (n=20)
Gender (% female)	11 (55%)	10 (50%)
Education (yrs)	14.9 ± 2.9	14.5 ± 2.5
Age at exam (yrs)	69.4 ± 7.3	68.3 ± 7.2
Age at onset (yrs)	NA	64.7 ± 6.9
Time onset to exam (yrs)	NA	3.6 ± 1.8
FBI (/72)	NA	11.2 ± 11.4
FAB (/18)	NA	13.7 ± 2.1
PSPRS (/100)	NA	35.5 ± 15.7
PSIS (/5)	NA	3.1 ± 0.7
MMSE (/30)	NA	27.3 ± 3.7
MDS-UPDRS I (/52)	NA	10.0 ± 4.6
MDS-UPDRS II (/52)	NA	19.0 ± 10.8
MDS-UPDRS III (/132)	NA	38.5 ± 16.2

FBI = Frontal Behavioral Inventory; FAB = Frontal Assessment Battery; PSPRS = PSP Rating Scale; PSIS = PSP Saccadic Impairment Scale; MMSE = Mini-Mental State Examination; MDS-UPDRS = Unified Parkinson’s Disease Rating Scale