Table 1 Characteristics of the study population, by body mass index (BMI)

18.5–24.9 Normal weight

25–29.9 Overweight

≥ 30 Oobese

p Value

18.5–24.9 Normal weight

25–29.9 Overweight

≥ 30 Obese

p Value

n = 526 (44.9%)

n = 546 (46.6%)

n = 100 (n = 8.5%)

n = 1168 (70.6%)

n = 365 (22.1%)

n = 121 (7.3%)

Age(y) (mean ± sd)

39.6 ± 18.9

47.4 ± 17.9

56.8 ± 12.9

0.001

39.2 ± 16.7

54.6 ± 14.4

56.8 ± 12.9

0.001

Level of education

0.035

0.001

I

18.0

2.2

12.5

2.2

6.1

12.5

II

46.0

37.9

45.0

41.7

43.1

45.0

III

16.8

17.0

13.3

12.3

16.4.

13.3

IV

35.4

42.9

29.2

43.8

33.4

29.2

Smokers (%)

41.8

37.3

28.2

0.201

44.0

37.4

28.2

0.001

Physical exercise other

0.001

0.001

than walking (%)

never

30.6

45.9

77.2

50.2

68.8

77.2

once a month

22.5

22.8

11.9

18.8

17.1

11.9

once a week

30.2

20.6

5.0

23.0

9.5

5.0

several times a week

8.5

5.1

0.0

4.3

1.2

0.0

every day

8.2

5.6

5.9

3.6

3.4

5.9

Walking (%)

0.002

0.001

never

19.2

28.3

56.4

27.5

40.2

56.4

once a month

47.7

43.7

37.3

51.5

46.4

37.3

once a week

21.5

20.9

4.5

16.3

10.8

4.5

every day

11.5

7.1

1.8

4.7

2.6

1.8

Arterial hypertension (%)

10.9

22.4

53.5

0.001

10.3

36.8

53.5

0.001

Diabetes mellitus (%)

4.3

7.2

11.2

0.001

2.9

8.3

11.2

0.001

Coronary artery disease (%)

5.5

10.1

26.5

0.005

5.4

15.7

26.5

0.001

Myocardial infarction (%)

2.3

3.9

6.4

0.011

1.3

4.4

6.4

0.001

Hypercholesterolemia (%)

8.3

18.4

31.5

0.001

10.7

31.6

31.5

0.001

Hypertrygliceridemia (%)

7.1

18.3

27.5

0.001

6.2

19.6

27.5

0.001