Table 1.

Patient characteristics

	ALL	PS	NPS	p value
Number of cases	111	71	40	–
Age (year, mean ± SD)	69 ± 11.6	70 ± 10.2	66 ± 13.5	0.12✱
Men/women (N)	62/49	39/32	23/17	0.84✝

No significant differences were observed with respect to age and the sex ratio between the PS and NPS groups

Abbreviations: PS parkinsonian syndrome, NPS non-parkinsonian syndrome, SD standard deviation

^✱t test

^✝Fisher’s exact test