Table 1

Baseline characteristics of participants according to quartiles of CV of fasting blood glucose

CharacteristicsQ1Q2Q3Q4P value
CV%≤2.82.8–4.424.42–6.4>6.4
N1917193319221927
Age, years60.18±5.6760.08±5.6860.04±5.7160.35±5.70.353
Gender0.124
 Female1035 (54%)1081 (55.9%)1099 (57.2%)1040 (54%)
 Male882 (46%)852 (44.1%)823 (42.8%)887 (46%)
Race<0.0001
 White1681 (87.7%)1662 (86%)1591 (82.8%)1463 (75.9%)
 Black236 (12.3%)271 (14%)331 (17.2%)464 (24.1%)
Smoking status
 Current320 (26.8%)317 (23.3%)338 (24.1%)410 (28.1%)<0.0001
 Former790 (32.8%)777 (33.6%)770 (33%)790 (33.2%)0.854
Drinking status
 Current1129 (58.9%)1086 (56.2%)1103 (57.4%)996 (51.7%)<0.0001
 Former376 (19.6%)379 (19.6%)374 (19.5%)447 (23.2%)0.003
Education level<0.0001
 1 (basic)287 (15%)304 (15.7%)321 (16.7%)405 (21%)
 2 (intermediate)821 (42.8%)819 (42.4%)769 (40%)780 (40.5%)
 3 (advanced)769 (40.1%)765 (39.6%)781 (40.6%)685 (35.5%)
BMI, kg/m227.16±4.5427.07±4.6227.39±4.8328.34±5.6<0.0001
SBP, mm Hg121.62±18.11122.29±18.35121.71±18.47125.41±19.85<0.0001
DBP, mm Hg70.73±10.1171.04±9.9971.13±10.1672.2±10.72<0.0001
FBG, mg/dL98.05±8.1597.17±9.0897.54±10.11107.6±40.98<0.0001
eGFR, mL/min/1.73 m268.03±16.267.91±15.8669.05±10.5370.8±19.23<0.0001
TC, mmol/L5.35±0.955.35±0.925.39±0.965.36±0.990.616
HDL-C, mmol/L1.38±0.461.4±0.481.4±0.461.39±0.510.413
LDL-C, mmol/L3.26±0.913.23±0.913.32±0.923.21±1.030.003
TG, mmol/L1.5±0.791.51±0.821.45±0.751.58±1.09<0.0001
Prevalent HT583 (30.4%)666 (34.5%)643 (33.5%)832 (43.2%)<0.0001
Prevalent CHD116 (6.1%)117 (6.1%)109 (5.7%)253 (13.1%)<0.0001
Prevalent stroke33 (1.7%)41 (2.1%)59 (3.1%)65 (3.4%)0.003
Anti-HT medicine use548 (28.6%)584 (30.2%)613 (31.9%)815 (42.3%)<0.0001
Aspirin use1020 (53.2%)1033 (53.4%)1031 (53.6%)1044 (54.2%)0.941
Statin use22 (1.1%)14 (0.7%)20 (1%)30 (1.6%)0.103
  • Values are mean±SD or number (%).

  • BMI, body mass index; CHD, coronary heart disease; CV, coefficient of variation; DBP, diastolic blood pressure; eGFR, estimated glomerular filtration rate; FBG, fasting blood glucose; HDL-C, high-density lipoprotein cholesterol; HT, hypertension; LDL-C, low-density lipoprotein cholesterol; SBP, systolic blood pressure; TC, total cholesterol; TG, triglycerides.