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Table 2 Mean performance (SDs shown in parantheses) of APOE ε4 carriers and non-carriers on cognitive measures (raw scores)

From: APOE status and its association to learning and memory performance in middle aged and older Norwegians seeking assessment for memory deficits

 

ε 4 non-carriers (n = 31)

ε 4 carriers (n = 39)

t-values/U-values

p-values

Effect sizesa

MMSE

28.4 (1.6)

27.5 (1.8)

2.19c

0.03

0.53

WASI-IQ

105 (13.4)b

106 (15.3)b

0.068c,e

0.95

0.01

Stroop Color Word Test (seconds)

94 (54.3)

106 (58.0)

-0.840c

0.40

0.22

WAIS-R Digit Symbol (items)

35 (10.5)

32 (12.1)

1.166c

0.25

0.27

FAS (items)

30 (12.0)

31 (12.8)

-0.262c

0.79

0.08

Animal fluency (items)

16 (5.8)

17 (5.6)

-0.299c

0.77

0.18

Trail Making A (seconds)

48 (22.0)

58 (26.9)

477d

0.13

-0.18

Trail Making B (seconds)

144 (112.6)

165 (89.4)

479.5d

0.14

-0.18

Boston Naming (items)

15 (1.1)

14 (1.1)

539.5d

0.03

-0.26

Rey Complex Figure Test – copy (points)

33 (5.4)

31 (7.0)

487d

0.16

-0.17

Rey Complex Figure Test – recall (points)

16 (9.0)

11 (7.5)

410.5d

0.02

-0.27

  1. Degrees of freedom for all parametric tests was 68
  2. a For t-tests, Cohen's d, for nonparametric tests r were calculated
  3. b Standardized scores
  4. c Test statistics according to independent t-tests
  5. d Test statistics according to Mann-Whitney U tests
  6. e Test statistic based on age-adjusted scores