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Table 1 Baseline characteristics of subjects with diabetes among the study cohort (1999–2004)

From: Association of cardio-renal biomarkers and mortality in the U.S.: a prospective cohort study

 

Total

1999–2000

2001–2002

2003–2004

Participants, No

1783

543

613

627

Age, years

62.49 ± 14.21

62.89 ± 13.02

61.58 ± 14.93

63.02 ± 14.43

Male (%)

929 (52.10)

278 (51.20)

325 (53.02)

326 (51.99)

BMI, kg/m2

31.24 ± 6.81

31.12 ± 6.72

31.46 ± 6.99

31.14 ± 6.70

Race/ethnicity

    

Mexican American

499 (27.99)

174 (32.04)

152 (24.80)

173 (27.59)

Other

158 (8.86)

59 (10.87)

53 (8.65)

46 (7.34)

Non-Hispanic white

714 (40.04)

175 (32.23)

258 (42.09)

281 (44.82)

Non-Hispanic black

412 (23.11)

135 (24.86)

150 (24.47)

127 (20.26)

Education levels

    

Less than high school

867 (48.74)

326 (60.26)

275 (44.93)

266 (42.49)

High school or equivalent

362 (20.35)

101 (18.67)

127 (20.75)

134 (21.41)

Greater than high school

550 (30.92)

114 (21.07)

210 (34.31)

226 (36.10)

Physical activity

    

Never

1066 (59.82)

346 (63.72)

362 (59.05)

358 (57.19)

Moderate

356 (19.98)

94 (17.31)

112 (18.27)

150 (23.96)

Vigorous

360 (20.20)

103 (18.97)

139 (22.68)

118 (18.85)

Serum cotinine

    

> 10 ng/mL

378 (21.80)

106 (20.50)

127 (21.24)

145 (23.42)

LOD − 10 ng/mL

1116 (64.36)

411 (79.50)

345 (57.69)

360 (58.16)

< LOD

240 (13.84)

0 (0.00)

126 (21.07)

114 (18.42)

Drinking status

989 (59.22)

292 (57.37)

332 (57.84)

365 (62.18)

PIR

    

≤ 1

387 (23.99)

132 (28.57)

118 (20.96)

137 (23.30)

1.01–4.99

1046 (64.85)

297 (64.29)

371 (65.90)

378 (64.29)

≥ 5

180 (11.16)

33 (7.14)

74 (13.14)

73 (12.41)

Duration of diabetes, y

    

< 3

738 (41.44)

224 (41.40)

270 (44.05)

244 (38.92)

3–10

503 (28.24)

145 (26.80)

171 (27.90)

187 (29.82)

> 10

540 (30.32)

172 (31.79)

172 (28.06)

196 (31.26)

Diabetes medication

    

No

203 (11.53)

58 (10.68)

75 (12.23)

70 (11.59)

Oral medication only

803 (45.63)

246 (45.30)

260 (42.41)

297 (49.17)

Any insulin use

327 (18.58)

102 (18.78)

110 (17.94)

115 (19.04)

Others

427 (24.26)

137 (25.23)

168 (27.41)

122 (20.20)

Hypertension

1280 (71.83)

387 (71.27)

435 (70.96)

458 (73.16)

Hypercholesterolemia

947 (53.29)

269 (49.63)

306 (50.33)

372 (59.33)

CVD

488 (27.89)

143 (26.68)

149 (25.08)

196 (31.61)

eGFR, mL/min per 1.73 m2

83.32 (63.08–97.41)

83.47 (64.35–97.24)

84.95 (64.36–99.86)

82.60 (61.33–95.81)

CRP, mg/L

3.60 (1.60–7.60)

3.80 (1.80–8.50)

3.60 (1.60–7.40)

3.30 (1.50–7.30)

hs-cTnT, ng/L

9.92 (6.12–16.62)

9.12 (5.34–15.87)

9.39 (6.03–16.32)

11.05 (7.07–18.20)

hs-cTnI, ng/L

3.10 (1.80–6.10)

3.10 (1.80–6.70)

3.00 (1.70–5.90)

3.20 (1.90–5.90)

NT-proBNP, pg/ml

82.48 (35.82–232.50)

81.35 (38.35–214.50)

76.06 (29.71–223.60)

93.79 (37.73–259.00)

Creatinine, umol/L

79.56 (66.72–97.24)

75.68 (66.72–93.59)

79.56 (61.88–97.24)

79.56 (70.72–97.24)

Cystatin C, mg/L

0.85 (0.72–1.05)

0.85 (0.73–1.03)

0.86 (0.72–1.06)

0.84 (0.72–1.06)

β-2 microglobulin, mg/L

2.23 (1.86–2.91)

2.17 (1.82–2.81)

2.25 (1.85–2.91)

2.28 (1.87–3.07)

Plasma glucose, mg/dL

144.30 (124.80-187.20)

152.30 (129.30-200.50)

137.90 (123.50-179.80)

143.50 (121.20-186.90)

HbA1c, %

7.00 (6.20–8.20)

7.40 (6.40–8.80)

6.80 (6.10–8.10)

6.90 (6.10–7.90)

Glycated albumin, %

17.54 (15.10-22.03)

18.80 (15.58–23.05)

17.31 (15.00-21.28)

17.20 (14.95–21.24)

Insulin, uU/mL

16.63 (9.51–29.22)

19.96 (12.14–30.31)

17.57 (10.64–31.76)

14.00 (7.37–25.16)

C-peptide, nmol/L

1.10 (0.78–1.47)

1.17 (0.84–1.61)

1.04 (0.73–1.38)

1.11 (0.80–1.49)

  1. BMI: body mass index; PIR: poverty-income ratio; CVD: cardiovascular disease; CRP: C-reactive protein; eGFR: estimated glomerular filtration rate; hs-cTnT: high-sensitivity Troponin T; hs-cTnI: high-sensitivity Troponin I; NT-proBNP,:N-terminal pro-B-type natriuretic peptide