Demographic Variable

PLA-EG (n = 14)

PLA-NEG (n = 18)

p-value

Gender (M/F)

4/10

6/12

0.541

Age (years)

67.4 (7.0)

68.2 (7.9)

0.749

Education (years)

12.4 (1.6)

11.8 (1.7)

0.322

Disease duration (years)

5.8 (4.8)

5.5 (4.7)

0.866

HY stage (II/III)

3/11

6/12

0.457

LEDD (mg)

306.5 (210.7)

334.9 (159.3)

0.678