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Table 1 General characteristics of study participants at baseline according to the absence or presence of metabolic syndrome in Korean men and women

From: Interactions between red and processed meat consumption and APOA5 gene variants associated with the incidence of metabolic syndrome in Korean adults

 

Total (n = 3266)

Men (n = 1726)

Women (n = 1540)

Non-MetS (n = 1682)

MetS (n = 1584)

p value1

Non-MetS (n = 912)

MetS (n = 814)

p value1

Non-MetS (n = 770)

MetS (n = 770)

p value1

Age (years)

49.1 ± 8.1

50.8 ± 8.2

< 0.001

50.5 ± 8.5

50.2 ± 8.0

0.480

47.5 ± 7.2

51.5 ± 8.3

< 0.001

Residential area (n, %)

  

< 0.001

  

0.017

  

< 0.001

 Ansan

521 (31.0)

733 (46.3)

 

308 (33.8)

320 (39.3)

 

213 (27.7)

413 (53.6)

 

 Ansung

1161 (69.0)

851 (53.7)

 

604 (66.2)

494 (60.7)

 

557 (72.3)

357 (46.4)

 

Educational level (n, %)

  

< 0.001

  

0.618

  

< 0.001

 ≤ 6 years

323 (19.2)

428 (27.0)

 

142 (15.6)

125 (15.4)

 

181 (23.5)

303 (39.4)

 

 ≤ 7 to ≤ 12 years

1049 (62.4)

924 (58.3)

 

541 (59.3)

500 (61.4)

 

508 (66.0)

424 (55.1)

 

 > 12 years

310 (18.4)

232 (14.6)

 

229 (25.1)

189 (23.2)

 

81 (10.5)

43 (5.6)

 

Household income (n, %)

  

< 0.001

  

0.388

  

< 0.001

 < 1 million

372 (22.1)

463 (29.2)

 

212 (23.2)

170 (20.9)

 

160 (20.8)

293 (38.1)

 

 ≤ 1 to < 2 million

507 (30.1)

498 (31.4)

 

267 (29.3)

262 (32.2)

 

240 (31.2)

236 (30.6)

 

 ≤ 2 to < 3 million

397 (23.6)

296 (18.7)

 

209 (22.9)

173 (21.3)

 

188 (24.4)

123 (16.0)

 

 ≥ 3 million

406 (24.1)

327 (20.6)

 

224 (24.6)

209 (25.7)

 

182 (23.6)

118 (15.3)

 

Smoking status (n, %)

  

0.042

  

0.001

  

0.313

 Never

967 (57.5)

889 (56.1)

 

217 (23.8)

147 (18.1)

 

750 (97.4)

742 (96.4)

 

 Past

308 (18.3)

256 (16.2)

 

302 (33.1)

251 (30.8)

 

6 (0.8)

5 (0.6)

 

 Current

407 (24.2)

439 (27.7)

 

393 (43.1)

416 (51.1)

 

14 (1.8)

23 (3.0)

 

Drinking status (n, %)

  

0.852

  

0.567

  

0.166

 Never

698 (41.3)

642 (40.5)

 

176 (19.3)

142 (17.4)

 

519 (67.4)

500 (64.9)

 

 Past

92 (5.5)

92 (5.8)

 

78 (8.6)

67 (8.2)

 

14 (1.8)

25 (3.2)

 

 Current

895 (53.2)

850 (53.7)

 

658 (72.1)

605 (74.3)

 

237 (30.8)

245 (31.8)

 

Physical activity (MET-h/day)

22.6 ± 13.7

24.3 ± 14.8

0.001

23.7 ± 14.3

24.5 ± 14.9

0.243

21.4 ± 12.8

24.0 ± 14.7

< 0.001

BMI (kg/m2)

22.9 ± 2.6

24.6 ± 2.6

< 0.001

22.8 ± 2.5

24.6 ± 2.5

< 0.001

23.1 ± 2.7

24.6 ± 2.8

< 0.001

Waist circumference (cm)

76.7 ± 7.2

82.1 ± 7.0

< 0.001

78.8 ± 6.2

84.2 ± 5.8

< 0.001

74.2 ± 7.6

80.0 ± 7.5

< 0.001

SBP (mmHg)

111.5 ± 14.2

119.2 ± 16.0

< 0.001

114.5 ± 13.8

121.0 ± 16.0

< 0.001

108.0 ± 13.8

117.3 ± 15.8

< 0.001

DBP (mmHg)

74.4 ± 9.7

79.7 ± 10.2

< 0.001

77.0 ± 9.5

81.8 ± 10.4

< 0.001

71.4 ± 9.0

77.4 ± 9.5

< 0.001

FBG (mg/dL)

82.6 ± 11.9

86.6 ± 17.6

< 0.001

85.0 ± 13.9

90.1 ± 20.6

< 0.001

79.7 ± 8.0

82.9 ± 12.7

< 0.001

Triglyceride (mg/dL)

116.6 ± 52.1

148.6 ± 95.6

< 0.001

126.6 ± 56.2

173.8 ± 114.2

< 0.001

104.7 ± 43.9

121.9 ± 60.5

< 0.001

HDL cholesterol (mg/dL)

49.5 ± 10.2

44.9 ± 9.0

< 0.001

48.0 ± 9.9

43.0 ± 8.6

< 0.001

51.2 ± 10.4

46.8 ± 9.0

< 0.001

Nutrient intake

 Energy (kcal/day)

1930.3 ± 559.5

1946.0 ± 585.6

0.434

1988.3 ± 544.0

2010.5 ± 554.0

0.400

1861.6 ± 570.2

1877.7 ± 610.3

0.594

 Protein (g/day)

66.7 ± 24.3

66.6 ± 25.1

0.892

68.5 ± 23.9

69.9 ± 24.0

0.245

64.6 ± 24.7

63.1 ± 25.7

0.264

 Fat (g/day)

34.0 ± 17.5

32.8 ± 17.9

0.050

35.9 ± 18.1

36.2 ± 17.6

0.755

31.8 ± 16.6

29.2 ± 17.5

0.003

 Carbohydrate (g/day)

334.4 ± 92.7

341.1 ± 101.4

0.050

342.0 ± 88.4

345.7 ± 94.2

0.403

325.5 ± 96.8

336.3 ± 108.3

0.040

 Fiber (g/day)

6.8 ± 3.1

7.0 ± 3.2

0.059

6.6 ± 2.9

6.9 ± 3.1

0.112

6.9 ± 3.24

7.1 ± 3.3

0.317

  1. Data are presented as mean ± standard deviation or number (percentage, %)
  2. Abbreviations: MetS Metabolic syndrome, BMI Body mass index, SBP Systolic blood pressure, DBP Diastolic blood pressure, FBG Fasting blood glucose, HDL High-density lipoprotein, MET Metabolic equivalent of task
  3. 1Chi-square test for categorical variables and t-test for continuous variables were performed to examine the differences between subjects with or without metabolic syndrome