Table 2 Characteristics of study participants.

From: Selection of the optimal intensity normalization region for FDG-PET studies of normal aging and Alzheimer’s disease

 

Young

Older

p value

Mean

SD

Mean

SD

Number/group

29

 

30

  

Age (y)

26

4

72

5

≤0.001

Sex (M/F)

13/17

10/19

 

Education (y)

16

2

14

4

0.003

Height (cm)

171

10

163

14

0.017

Weight (kg)

69

13

74

16

 

Body mass index (kg/m2)

23

3

28

5

≤0.001

Total body fat (%)

27

9

36

9

≤0.001

Fasting plasma measurements

Glucose (mM)

4.8

0.4

5.2

0.5

0.003

Cholesterol (mM)

4.1

0.8

5.1

1.3

0.002

HDL cholesterol (mmol/L)

1.5

0.3

1.5

0.3

 

LDL cholesterol (mmol/L)

2.2

0.7

3.1

1.1

0.002

Triglycerides (mM)

0.9

0.5

1.2

0.4

0.005

Free fatty acids (mM)

0.8

0.3

0.9

0.4

 

Insulin (IU/L)

4.2

1.8

5.2

4.5

 

Hemoglobin A1c (%)

5.2

0.2

5.7

0.2

≤0.001

Albumin (g/L)

44

3

43

2

 

Thyroid stimulating hormone (mIU/L)

2.2

0.8

2.5

0.9

 

Creatinine (µmol/L)

73

15

74

17

 
  1. P-values were calculated using unpaired t-tests and a chi-square test was used to evaluate sex differences between the two groups, uncorrected for multiple comparisons, *p ≤ 0.05.