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Table 1 Baseline characteristics of participants according to sex-specific quartiles of the dietary inflammatory indexa

From: Dietary inflammatory index and risk of first myocardial infarction; a prospective population-based study

 

Men

(n = 5284)

Women

(n = 1600)

 

Q1

Q2

Q3

Q4

P b

Q1

Q2

Q3

Q4

P b

n

1266

1319

1299

1400

 

407

422

404

427

 

DII

    

<0.001

    

<0.001

 Mean

–1.38

0.43

1.60

2.90

 

–1.14

0.69

1.81

2.93

 

 SD

0.83

0.37

0.33

0.53

 

0.87

0.38

0.29

0.47

 

 Min

–4.16

–0.25

1.05

2.16

 

–3.86

0.00

1.29

2.31

 

 Max

–0.25

1.05

2.16

5.04

 

0.00

1.29

2.30

4.31

 

Age at baseline (Y)

    

0.079

    

0.331

 Mean

53.4

54.1

53.9

54.0

 

54.9

54.3

54.7

54.0

 

 SD

7.47

7.19

7.36

7.38

 

7.68

8.17

7.40

8.28

 

Postsecondary education (%)

20.6

18.9

13.8

12.9

<0.001

22.4

16.1

16.3

10.8

<0.001

 Missing (n)

11

18

17

9

 

8

7

9

4

 

Smoking status (%)

    

<0.001

    

<0.001

 Daily smokers

15.4

16.8

22.6

28.8

 

15.7

22.3

22.0

34.2

 

 Ex-smokers

30.5

31.2

30.1

29.6

 

19.9

19.9

17.8

20.1

 

 Non-smokers

52.8

50.8

45.7

40.6

 

63.1

55.9

58.4

45.4

 

 Missing (n)

16

17

20

15

 

5

8

7

1

 

Physical activity (%)c

    

<0.001

    

<0.001

 Medium

47.7

45.6

44.5

37.7

 

54.8

43.4

42.9

40.5

 

 High

17.5

13.2

11.1

8.6

 

12.0

11.0

9.9

11.3

 

 Missing (n)

18

7

9

9

 

8

9

9

10

 

BMI (kg/m2) (%)

    

0.944

    

0.017

 <25

37.4

36.8

37.7

36.5

 

45.7

45.5

50.0

44.0

 

 25–29.9

51.1

50.3

49.9

50.7

 

32.9

35.3

36.9

40.7

 

 >30

11.5

12.9

12.3

12.8

 

21.4

19.2

13.1

15.2

 

 Missing (n)

1

1

3

0

 

0

0

0

0

 

Diabetes (%)

8.2

7.5

6.2

5.9

0.054

7.1

8.1

5.4

4.9

0.211

 Missing (n)

0

1

0

0

 

0

1

0

0

 

Systolic BP (mmHg)

    

0.005

    

0.673

 Mean

132.7

134.1

134.6

135.2

 

135.3

134.4

133.7

133.8

 

 SD

17.6

18.1

18.2

18.4

 

21.2

19.7

20.1

20.7

 

 Missing (n)

20

18

19

8

 

4

5

7

7

 

S-cholesterol (mmol/L)

    

0.003

    

0.740

 Mean

5.96

6.03

6.04

6.13

 

6.20

6.18

6.11

6.16

 

 SD

1.20

1.23

1.20

1.24

 

1.32

1.30

1.27

1.21

 

 Missing (n)

7

7

8

12

 

1

3

0

1

 

Lag time (Y)d

    

0.498

    

0.142

 Mean

6.80

6.81

6.41

6.43

 

6.88

7.79

8.14

6.96

 

 SD

4.05

3.87

4.00

4.08

 

3.88

3.96

4.17

4.26

 
  1. Q quartile, DII Dietary inflammatory index, SD Standard deviation, Y years, BMI Body mass index, BP, Blood pressure, S-cholesterol, Serum cholesterol, Lag time time from baseline to MI
  2. aQuartile cutoffs for DII based on the controls
  3. bP-values determined by ANOVA for continuous variables or Chi-Square tests for categorical variables
  4. cRefers to recreational physical activity
  5. dYears from health examination/recruitment to myocardial infarction