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Table 2 Demographic and baseline ERP characteristics of the participant groups

From: Usefulness of event-related potentials in the assessment of mild cognitive impairment

Parameter

Patients

Controls

Statistic

N (female-male)

91 (56–35)

30(15–15)

χ2 = 0.27

Age Mean (SD)

67.1(6.9)

68.7(9.9)

t = 0.96 p = 0.34

Age range

46–83

49–90

-

Age ≤ 65 (female)

38(28)

11(5)

χ2 = 0.08

Age > 65 (female)

53(28)

19(10)

χ2 = 0.99

N200L (mean ± SD), ms

245.1 ± 29.9

234.4 ± 24.3

U = 1215, p = 0.371

P300L (mean ± SD), ms

399.7 ± 43.3

367.6 ± 28.9

U = 783, p < 0.001

SWL (mean ± SD), ms

534.1 ± 60.6

495.0 ± 45.6

U = 800, p = 0.001

N200A (mean ± SD), μV

9.3 ± 0.44

7.3 ± 0.39

U = 897, p = 0.025

P300A (mean ± SD), μV

16.2 ± 0.77

13.5 ± 0.57

U = 1032, p = 0.107