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Table 2 Demographic and clinical characteristics of the study groups at baseline

From: Plasma adiponectin levels predict cognitive decline and cortical thinning in mild cognitive impairment with beta-amyloid pathology

 

Aβ (−) (n = 31)

Aβ (+) (n = 125)

p-value

Age (years)

75.3 (8.59)

74.3 (7.31)

0.542

Sex

 Male

21 (67.7%)

84 (67.2%)

1

 Female

10 (32.3%)

41 (32.8%)

 

Education (years)

15.6 (3.32)

16.1 (2.85)

0.461

History of hypertension

 No

12 (38.7%)

50 (40.0%)

1

 Yes

19 (61.3%)

75 (60.0%)

 

History of diabetes mellitus

 No

26 (83.9%)

110 (88.0%)

0.752

 Yes

5 (16.1%)

15 (12.0%)

 

PPARγ agonists usea

 No

31 (100%)

124 (99.2%)

1

 Yes

0 (0%)

1 (0.8%)

 

Ever smoker

 No

15 (48.4%)

75 (60.0%)

0.333

 Yes

16 (51.6%)

50 (40.0%)

 

History of alcohol abuse

 No

28 (90.3%)

119 (95.2%)

0.540

 Yes

3 (9.7%)

6 (4.8%)

 

BMI (kg/m2)

25.1 (2.50)

24.6 (2.51)

0.321

Plasma insulin (uIU/mL)

3.12 (3.37)

2.32 (2.79)

0.227

eGFR (mL/min/1.73 m2)

69.4 (16.3)

69.8 (15.0)

0.907

Plasma adiponectin (μg/mL)

6.33 (3.70)

6.77 (3.95)

0.564

Plasma leptin (ng/mL)

10.5 (9.79)

9.61 (9.29)

0.632

CSF Aβ (pg/mL)b

1530 (181)

625 (182)

< 0.001

Number of APOE ε4 allele

 0

26 (83.9%)

47 (37.6%)

< 0.001

 1

5 (16.1%)

61 (48.8%)

 

 2

0 (0%)

17 (13.6%)

 

ADAS-Cog

9.34 (3.93)

12.4 (4.73)

< 0.001

Cortical thickness in PHC, right (mm)

2.46 (0.340)

2.34 (0.317)

0.097

Cortical thickness in PHC, left (mm)

2.49 (0.334)

2.37 (0.367)

0.089

Cortical thickness in ERC, right (mm)

3.31 (0.468)

3.11 (0.502)

0.041

Cortical thickness in ERC, left (mm)

3.04 (0.554)

2.98 (0.510)

0.606

Follow-up period (months)

56.7 (41.7)

53.7 (37.6)

0.713

Number of repeated measurements

 ADAS-Cog

7.06 (3.48)

6.44 (2.78)

0.359

 MRI

5.26 (1.75)

5.34 (2.04)

0.814

  1. Data are presented as mean (standard deviation) for continuous variables and n (%) for categorical variables
  2. Abbreviations: amyloid-β, ADAS-Cog Alzheimer’s Disease Assessment Scale-Cognitive subscale, APOE apolipoprotein E, BMI body mass index, CSF cerebrospinal fluid, ERC entorhinal cortex, eGFR estimated glomerular filtration rate, MRI magnetic resonance imaging, PHC parahippocampal cortex, PPARγ peroxisome proliferator-activated receptor γ, SE standard error
  3. aPPARγ agonists investigated were pioglitazone and rosiglitazone
  4. bBecause of the upper technical limit of measuring range, the levels of 1700 pg/mL or more were treated as 1700 pg/mL. The levels under 1100 pg/mL were determined as Aβ (+)