Demographic Variable

non-PLA-EG (n = 15)

non-PLA-NEG (n = 17)

p-value

Gender (M/F)

6/9

4/13

0.267

Age (years)

68.3 (6.7)

67.5 (8.2)

0.767

Education (years)

12.0 (1.5)

12.1 (1.8)

0.910

Disease duration (years)

6.8 (4.4)

4.6 (4.7)

0.183

HY stage (II/III)

4/11

5/12

0.863

LEDD (mg)

331.0 (180.7)

308.9 (199.0)

0.738