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Table 1 Weighted baseline characteristics of participants according to HbA1c level

From: Association between hemoglobin A1c and abdominal aortic calcification: results from the National Health and Nutrition Examination Survey 2013–2014

 

Overall (n = 1799)

Tertile 1 (≤ 5.4%) (n = 659)

Tertile 2 (5.4- 5.8%) (n = 546)

Tertile 3 (> 5.8%) (n = 594)

P-value

Age, year

56.7 ± 0.3

53.4 ± 0.4

58.0 ± 0.5

61.3 ± 0.3

< 0.001

Male, n (%)

933(51.8)

327(49.9)

282(52.4)

324(54.4)

0.216

BMI, kg/m2

28.2 ± 0.2

26.7 ± 0.2

28.7 ± 0.3

30.2 ± 0.3

< 0.001

Race, n (%)

    

< 0.001

 Mexican American

220(6.4)

73(5.2)

65(6.4)

82(8.7)

 

 Other Hispanic

167(4.4)

58(3.9)

52(4.2)

57(5.5)

 

 Non-Hispanic White

827(73.0)

380(80.9)

252(73.3)

195(58.3)

 

 Non-Hispanic Black

352(9.8)

86(5.6)

103(9.7)

163(17.9)

 

 Other Race

233(6.3)

62(4.5)

74(6.4)

97(9.6)

 

Education level, n (%)

    

< 0.001

 Less than 9th grade

118(3.4)

23(2.1)

40(3.3)

55(5.9)

 

 9-11th grade

216(9.1)

70(7.6)

66(9.2)

80(11.7)

 

 High school graduate or GED

395(20.8)

140(18.5)

114(21.1)

141(24.7)

 

 Some college or AA degree

543(30.5)

200(29.0)

159(30.1)

184(34.0)

 

 College graduate or above

527(36.1)

226(42.8)

167(36.3)

134(23.7)

 

RIP

3.29 ± 0.13

3.51 ± 0.16

3.23 ± 0.1

2.96 ± 0.1

< 0.001

Smoker, n (%)

967(54.9)

378(60.4)

283(50.3)

306(50.8)

0.011

Alcohol drinker, n (%)

459(19.2)

128(13.4)

134(19.0)

197(29.9)

< 0.001

Metabolic equivalent, MET-h/w

60.7 ± 2.4

59.9 ± 3.8

57.6 ± 4.2

66.2 ± 4.6

0.361

Hypertension, n (%)

805(41.0)

210(29.8)

229(40.4)

366(62.3)

< 0.001

SBP, mm Hg

124.7 ± 0.6

121.0 ± 0.8

125.6 ± 1.0

130.3 ± 1.0

< 0.001

DBP, mm Hg

71.8 ± 0.3

72.6 ± 0.3

71.7 ± 0.7

70.6 ± 0.5

0.009

High cholesterol, n (%)

686(38.7)

168(26.6)

195(41.7)

323(57.0)

< 0.001

TC, mg/dL

196.2 ± 1.2

197.5 ± 1.9

203.0 ± 2.0

185.2 ± 2.2

0.001

TG, mg/dL

119.8 ± 3.8

111.0 ± 6.4

120.9 ± 4.3

134.0 ± 6.3

0.005

HDL-C, mg/dL

55.5 ± 0.5

59.9 ± 0.7

54.8 ± 0.9

48.4 ± 1.1

< 0.001

LDL-C, mg/dL

117.4 ± 1.5

117.1 ± 2.4

121.8 ± 3.0

112.5 ± 2.6

0.373

Diabetes, n (%)

381(21.2)

19(2.1)

32(5.1)

330(55.6)

< 0.001

FPG, mg/dL

106.5 ± 1.0

96.5 ± 0.5

101.2 ± 0.8

130.7 ± 3.7

< 0.001

eGFR, mL/min/1.73 m2

85.2 ± 0.6

87.5 ± 0.9

85.6 ± 0.8

80.4 ± 0.7

< 0.001

Total 25-hydroxyvitamin D, nmol/L

75.2 ± 1.5

77.1 ± 2.4

75.6 ± 1.9

71.3 ± 1.7

0.068

Serum calcium, mmol/L

2.4 ± 0.0

2.4 ± 0.0

2.4 ± 0.0

2.4 ± 0.0

0.016

Serum phosphorus, mmol/L

1.2 ± 0.0

1.2 ± 0.0

1.2 ± 0.0

1.2 ± 0.0

0.756

NLR

2.3 ± 0.0

2.3 ± 0.1

2.3 ± 0.1

2.3 ± 0.1

0.539

AAC-24 score

1.3 ± 0.1

0.7 ± 0.1

1.2 ± 0.1

2.3 ± 0.2

< 0.001

Severe AAC, n (%)

141(6.7)

28(2.7)

34(5.9)

79(14.8)

< 0.001

  1. Values are presented as weighted means ± standard error or frequency (weighted percentages) when appropriate. Abbreviations: BMI, body mass index; GED, general educational development; RIP, ratio of family income to poverty; SBP, systolic blood pressure; DBP, diastolic blood pressure; TC, total cholesterol; TG, triglyceride; LDL-C, low-density lipoprotein cholesterol; HDL-C, high-density lipoprotein cholesterol; TG, triglycerides; FPG, fasting plasma glucose; HbA1c, hemoglobin A1c; eGFR, estimated glomerular filtration rate; NLR, neutrophil-lymphocyte ratio; AAC, abdominal aortic calcification