Table 1 Demographics and baseline characteristics of the subjects divided based on dementia conversion.

From: Magnetic resonance image-based brain age as a discriminator of dementia conversion in patients with amyloid-negative amnestic mild cognitive impairment

 

Non-converter (N = 56)

Converter (N = 35)

p-value

Age of onset (years)

69.66 ± 9.55

72.80 ± 7.41

0.277

Age at diagnosis (years)

72.30 ± 8.88

74.69 ± 6.84

0.260

Age at MRI scan (years)

72.04 ± 9.10

74.51 ± 7.18

0.205

Duration from onset to diagnosis (months)

32.61 ± 30.50

28.37 ± 21.50

0.977

Sex (female)

29 (51.79%)

24 (68.57%)

0.174

Education (months)

9.62 ± 5.43

9.23 ± 5.53

0.681

ApoE genotype (e4 carrier%)

10 (17.86%)

6 (17.15%)

0.992

K-MMSE

26.25 ± 3.90

23.17 ± 4.20

0.001*

CDR

0.50 ± 0.00

0.54 ± 0.14

0.029*

  1. The Student t-test was performed on normally distributed data. For continuous variables that did not show normal distributions, the Kruskal–Wallis test was performed. Group differences in dichotomous variables were evaluated using the χ2 test.
  2. MRI magnetic resonance imaging, K-MMSE Korean version mini-mental state examination, CDR clinical dementia rating.
  3. *p-value < 0.05.
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