Table 4 Factors that modify the predictive effects of levodopa responsiveness and disease subtype on motor improvement

Preoperative levodopa responsiveness

Gender

Female

1.1^a

(0.3,1.9)

0.0294*

Male

0.6^a

(−0.4,1.6)

0.2901

Disease duration, y

<10

2.0^a

(1.1,2.9)

0.0021**

> = 10

−0.1^a

(−0.9,0.8)

0.8874

Motor fluctuations duration, y

<=3

3.1^a

(0.8,5.5)

0.0393*

>3

0.5^a

(−0.4,1.3)

0.3061

Disease subtype(PIGD/LPS)

Motor fluctuations duration, y

>3

−38.4^b

(−67.1,−9.7)

0.039*

Disease severity

>50

−41.1^b

(−61.8,−20.4)

0.03*