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Table 6 Paired comparison of motor function and visual function in 16 Parkinson’s disease patients taking vs not taking medications a

From: Stereopsis impairment is associated with decreased color perception and worse motor performance in Parkinson’s disease

Data parameters Off medication (n = 8) (mean ± SD) On medication (n = 9) (mean ± SD) t P-value
H&Y stage 2.11 ± 0.50 1.94 ± 0.52 1.902 0.110
UPDRS part III score 27.37 ± 13.01 10.24 ± 3.51 3.680 0.009b
TAN (PPT scores) 35.74 ± 8.65 44.33 ± 6.57 -3.78 0.007b
TES 89.24 ± 30.74 60.43 ± 30.55 2.764 0.025c
PES (red) 12.43 ± 6.53 9.87 ± 7.95 1.114 0.376
PES (green) 23.14 ± 9.34 12.56 ± 8.12 2.545 0.027c
PES (blue) 35.49 ± 18.12 29.01 ± 17.50 1.227 0.290
PES (purple) 12.45 ± 7.88 10.67 ± 8.54 0.711 0.574
Stereopsis (LG) 6.33 ± 1.82 6.64 ± 2.07 -1.023 0.377
  1. aH&Y, Hoehn and Yahr; LG, Limited grade; MMSE, Mini Mental State Examination; MoCA, Montreal Cognitive Assessment; PES, Partial error score; PPT, Purdue Pegboard Test; TAN, Total average number; TES, Total error score; UPDRS, Unified Parkinson’s Disease Rating Scale. bP < 0.05; cP < 0.01.