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Table 1 Descriptive characteristics of participants in training and test datasets in U.S. adultsa

From: Application of the deep learning algorithm in nutrition research – using serum pyridoxal 5′-phosphate as an example

 

Training

Test

P value

n

3401

377

 

Age, y

50.7

50.9

0.80

Women, %

53.5

49.1

0.10

Education, %

  

0.48

 Less than high school (< 12 years)

27.3

24.9

 

 Completed high school (12 years)

23.3

24.7

 

 More than high school (> 12 years)

49.4

50.4

 

Ethnicity, %

  

0.34

 Hispanics

23.1

27.0

 

 Non-Hispanic White

55.2

52.2

 

 Non-Hispanic Black

18.6

16.9

 

 Other races

3.2

3.9

 

Ratio of family income to poverty

2.57

2.48

0.35

Adherence to physical activity guideline recommendations, %

  

0.33

 Below (< 150 minutes a week of moderate-intensity)

11.3

13.0

 

 Meeting (150-299 minutes a week of moderate-intensity)

40.6

40.6

 

 Exceeding (≥300 minutes a week of moderate-intensity)

48.1

46.4

 

Smoking status, %

  

0.37

 Never smoking

54.3

54.9

 

 Former smoking

25.9

28.7

 

 Current smoking

19.9

16.5

 

Anti-Hypertension medication use, %

32.2

34.5

0.43

Cholesterol-lowering medication use, %

19.2

19.4

0.91

Insulin treatment, %

2.7

4.2

0.11

Anti-Diabetes medication use, %

9.9

11.4

0.41

Systolic blood pressure, mm/Hg

122

124

0.06

Diastolic blood pressure, mm/Hg

68

68

0.89

Glucoseb, mg/dL

108

108

0.74

Glycohemoglobin, %

5.72

5.69

0.67

Body mass index, kg/m2

29.0

28.7

0.46

High density lipoprotein cholesterolc, mg/dL

53.7

54.2

0.49

Low density lipoprotein cholesterolc, mg/dL

115.8

115.4

0.84

Total cholesterolc, mg/dL

194.4

194.8

0.86

C-reactive proteind, mg/dL

0.41

0.41

0.90

Daily vitamin B6 supplement, mg/d

3.73

3.59

0.89

Serum pyridoxal 5′-phosphate, nmol/L

65.6

66.6

0.81

Total energy intake, kcal

2019

2005

0.71

  1. aValues are mean (standard error) adjusted for age and sex, or percentages
  2. bThe fasting glucose value in mg/dL can be converted to mmol/L by multiplying by 0.05551
  3. cThe cholesterol value in mg/dL can be converted to mmol/L by multiplying by 0.02586
  4. dThe C-reactive protein value in mg/dL can be converted to mg/L by multiplying by 10