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Table 1 Baseline characteristics of the study population according to the number of metabolic syndrome components

From: Age-specific diabetes risk by the number of metabolic syndrome components: a Korean nationwide cohort study

 

Number of components

0

1

2

3

4

5

Participants, n

6,269,899

5,574,829

3,907,472

2,389,166

1,083,306

250,971

Age, years

39.69 ± 12.02

45.02 ± 13.31

48.83 ± 13.36

51.86 ± 13.26

54.42 ± 13.05

56.62 ± 12.56

 20–39, %

48.87

34.05

24.5

18.1

13.34

9.23

 40–64, %

47.81

57.24

62.27

63.68

63.14

62.53

 ≥ 65, %

3.32

8.72

13.23

18.22

23.51

28.24

Male, %

39.64

52.24

58.27

57.94

55.09

51.09

Body mass index, kg/m2

21.76 ± 2.47

23.09 ± 2.76

24.43 ± 3.03

25.52 ± 3.15

26.65 ± 3.17

27.29 ± 2.96

 < 25, %

69.74

49.88

32.26

20.54

11.64

2.14

 ≥ 25, %

30.26

50.12

67.74

79.46

88.36

97.86

Waist circumference, cm

73.68 ± 7.12

78.09 ± 7.67

82.32 ± 8.12

85.52 ± 8.26

89.04 ± 7.85

93.08 ± 5.53

Total cholesterol, mg/dl

185.13 ± 30.92

191.59 ± 34.31

201.36 ± 37.03

206.72 ± 39.52

208.44 ± 41.61

208.33 ± 42.91

HDL cholesterol, mg/dl

62.18 ± 13.71

56.42 ± 16.63

52.54 ± 16.99

49.5 ± 16.32

47.63 ± 15.68

46.3 ± 14.96

LDL cholesterol, mg/dl

106.98 ± 28.91

113.5 ± 31

118.65 ± 34.39

119.9 ± 37.52

119.48 ± 39.8

118.78 ± 41.44

Triglycerides, mg/dla

74.86 (74.84–74.88)

98.33 (98.3–98.37)

135.17 (135.1–135.24)

169.91 (169.79–170.02)

189.52 (189.34–189.7)

197.51 (197.11–197.92)

Systolic blood pressure, mmHg

111.55 ± 9.28

121.12 ± 13.75

126.45 ± 14.39

130.58 ± 14.32

133.66 ± 14.07

135.36 ± 14.15

Diastolic blood pressure, mmHg

69.95 ± 7.28

75.65 ± 9.47

78.83 ± 9.82

81.18 ± 9.89

82.75 ± 9.86

83.46 ± 9.93

Fasting plasma glucose, mmol/l

86.76 ± 7.62

91.55 ± 10.41

95.39 ± 11.5

97.85 ± 11.76

101.95 ± 11.35

108.78 ± 6.96

Current smokers

1,317,896 (21.02)

1,454,996 (26.1)

1,124,501 (28.78)

671,147 (28.09)

275,492 (25.43)

55,468 (22.1)

Heavy alcohol drinker (≥ 30 g/day)

254,425 (4.06)

355,292 (6.37)

323,275 (8.27)

216,731 (9.07)

96,259 (8.89)

21,012 (8.37)

Regular exercise (yes)

3,204,800 (51.11)

2,829,184 (50.75)

1,957,155 (50.09)

1,170,131 (48.98)

513,768 (47.43)

112,812 (44.95)

Income (lower 25%)

1,755,411 (28)

1,514,204 (27.16)

1,003,101 (25.67)

597,012 (24.99)

268,774 (24.81)

62,445 (24.88)

  1. Data are presented as mean ± standard deviation (SD) or proportions (%)
  2. aGeometric means (95% CI) calculated using Wald method for means