Table 2 Comparison of neuropsychological test results between ‘fridge sign’-positive MCI patients and ‘fridge sign’-negative MCI patients.

From: Misplacement of something inside the refrigerator is not a sign of dementia, but a probable symptom of attention deficit due to depression

Variables

Fridge sign (+) MCI (n = 20)

Fridge sign (−) MCI (n = 40)

P value*

Basic demographics

Age

60.55 ± 8.89

60.67 ± 7.38

0.954

Education level

10.00 ± 5.15

10.95 ± 3.90

0.429

MMSE

25.45 ± 3.34

26.77 ± 2.95

0.123

CDR-SOB

1.52 ± 0.99

1.34 ± 0.94

0.476

GDepS

17.90 ± 9.46

7.56 ± 7.78

< 0.001

Neuropsychological test

Digit span forward

5.45 ± 1.27

6.12 ± 1.36

0.070

Digit span backward

3.50 ± 1.35

3.98 ± 1.29

0.192

BNT

44.70 ± 9.03

44.63 ± 8.80

0.975

Rey CFT copy

29.30 ± 4.77

30.55 ± 4.33

0.312

VLT delayed recall

5.50 ± 2.28

4.58 ± 3.21

0.255

VLT recognition

19.00 ± 3.55

17.03 ± 5.04

0.123

COWAT

21.00 ± 7.48

23.73 ± 11.17

0.570

Stroop word reading

106.83 ± 15.28

110.92 ± 4.30

0.125

Stroop color reading

71.38 ± 22.88

87.03 ± 22.29

0.018

Trail making test part A

25.21 ± 9.12

21.10 ± 10.51

0.213

Trail making test part B

67.71 ± 70.09

56.58 ± 68.83

0.620

  1. Values are given as the mean ± standard deviation.
  2. MCI mild cognitive impairment, MMSE Mini-Mental State Examination, CDR clinical dementia rating, SOB sum of box, GDS geriatric depression scale, BNT Boston Naming Test, Rey CFT Rey Complex Figure Test, SVLT verbal learning test, COWAT Controlled Oral Word Association Test.
  3. *P values were obtained using the Mann–Whitney test.
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