Table 2.

Clinical characteristics of elderly onset Parkinson’s disease (EOPD) and young onset Parkinson’s disease (YOPD) patients

Characteristic	EOPD (n = 20)	YOPD (n = 15)	P value
Age at 1st PET (years)	64 ± 7	44 ± 7	< 0.001
Age at 2nd PET (years)	68 ± 7	49 ± 6	< 0.001
Sex (M/F), n	12/8	9/6	NA
Disease duration (months)	30 ± 36	30 ± 33	NS
Test interval (months)	51 ± 21	62 ± 15	0.115
Hoehn-Yahr stage at 1st PET	1.8 ± 0.6	1.4 ± 0.6	0.09
Hoehn-Yahr stage at 2nd PET	2.7 ± 0.7	2.5 ± 0.8	NS

NA not applicable; NS not significant