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Table 1 Comparison of descriptive, clinical, and performance variables between CNAβ+ and CNAβ− groups

From: EEG/ERP evidence of possible hyperexcitability in older adults with elevated beta-amyloid

Variable

CNAβ+ (n = 17)

 CNAβ− (n = 17)

P value

Age

73 ± 5

75 ± 6

0.34a

Sex, females (%)

11 (65)

12 (71)

0.71b

MOCA

26 ± 2

28 ± 2

0.12a

0-back, response time (ms)

510 ± 114

510 ± 149

0.98a

0-back, accuracy (#)

60 (60–60)

60 (60–60)

0.29c

1-back, response time (ms)

543 ± 125

546 ± 95

0.96a

1-back, accuracy (#)

59 (57–59)

58 (57–60)

0.30c

2-back, response time (ms)

673 ± 143

665 ± 134

0.86a

2-back, accuracy (#)

52 (49–54)

50 (39–55)

0.31c

  1. CNAβ+, cognitively normal, beta-amyloid positive; CNAβ−, cognitively normal, beta-amyloid negative; MOCA, Montreal Cognitive Assessment. Variables are described as mean ± standard deviation; median (Q1–Q3), or number (frequency). aIndependent t-test; bChi-square test; cMedian test. #Number of correct response