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Table 1 Demographic information and disease features of control, PD-NCI and PD-CI groups

From: Potential biomarkers relating pathological proteins, neuroinflammatory factors and free radicals in PD patients with cognitive impairment: a cross-sectional study

Demographic information and disease features

Control group (31 cases)

PD-NCI group (26 cases)

PD-CI group (36 cases)

P value

Age (years, mean ± SD)

52.2 ± 8.6

57.4 ± 10.8

61.1 ± 9.4

0.019

Gender (male/total, %)

17/31 (54.8%)

13/26 (50.0%)

19/36 (52.8%)

0.483

Educational level

   

0.045

  <6 years [case/total (%)]

11/31 (35.5%)

5/26 (19.2%)

19/36 (52.8%)

 

  6-12 years [case/total (%)]

15/31 (48.4%)

16/26 (61.5%)

12/36 (33.3%)

 

  >12 years [case/total (%)]

5/31 (16.1%)

5/26 (19.2%)

5/36 (13.9%)

 

Onset lateralization

   

0.544

  Left [case/total (%)]

-

11/26 (42.3%)

19/36 (52.8%)

 

  Right [case/total (%)]

-

13/26 (50.0%)

13/36 (36.1%)

 

  Both [case/total (%)]

-

2/26 (7.7%)

4/36 (11.1%)

 

Disease duration [years, median (quartile)]

-

2.0 (2.0 ~ 4.5)

3.0 (1.0 ~ 5.0)

0.834

H-Y stage [stage, median (quartile)]

 

2.0 (1.0 ~ 2.5)

2.0 (1.5 ~ 2.6)

0.128