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Clinical and demographic data evaluation of PD and HC.
| Characteristics | PD (n = 68) | HC (n = 48) | Test statistics | P-value |
| Sex (M/F) | 35/33 | 23/25 | 0.409 | >0.05a |
| Age (year) | 57.8 ± 7.0 | 57.8 ± 5.5 | 0.021 | >0.05b |
| Education (year) | 11.8 ± 3.3 | 11.7 ± 4.8 | 0.689 | >0.05c |
| MMSE | 28.6 ± 1.7 | 29.0 ± 2.3 | 0.585 | >0.05d |
| HAMD | 11.0 ± 6.9 | 2.1 ± 2.3 | 67.58 | <0.05e |
aThe P-value for gender distribution by Fisher’s exact test; b−eThe P-values for age, education, MMSE and HAMD, respectively, by analysis of variance (ANOVA).
