History, Present, and Progress of Frontotemporal Dementia in China: A Systematic Review

Table 1

Demographic variables by diagnosis.

Variable∖subgroups	bvFTD	PFNA	SD	Overall
MMSE score at the initial assessment	13.9±6.7	15.3±9.6	15.8±10.7	14.7±8.0
Age at onset (years)	53.8±14.8	64.1±10.1	63.8±9.9	57.8±13.8
Male/sex	16/35	6/8	3/6	25/49