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Table 1 Baseline characteristiecs and biochemical assessments

From: Increased blood glycohemoglobin A1c levels lead to overestimation of arterial oxygen saturation by pulse oximetry in patients with type 2 diabetes

Variables HbA1c≤7% (n=147) HbA1c>7% (n=114) P Value
Male gender (%) 104(70.7) 78(68.4) 0.685
Age (yrs) 67±6 69±7 0.01
Chronic obstructive pulmonary disease (%) 98(66.7) 81(71.1) 0.449
Cardiogenic pulmonary edema (%) 13(8.8) 17(14.9) 0.127
Pneumonia (%) 40(27.2) 46(40.4) 0.025
Hypertension (%) 49(33.3) 40(35.1) 0.243
Systolic blood pressure (mmHg) 131±9 132±9 0.374`
Diastolic blood pressure (mmHg) 75±8 76±8 0.317
Red blood cell (x1012/L) 4.75±0.73 4.91±0.77 0.088
Hemoglobin (g/L) 132±12 134±13 0.199
Body temperature (°C) 37.3±0.1 37.4 ± 0.1 <0.001
Total cholesterol (mmo1/L) 4.06±0.91 4.17±0.95 0.343
HDL-cholesterol (mmo1/L) 1.19±0.26 1.17±0.27 0.545
LDL-cholesterol (mmo1/L) 2.43±0.62 2.41±0.68 0.805
Triglycerides (mmo1/L) 1.72±0.75 1.91± 0.78 0.047
Fasting Glucose (mmo1/L) 5.9±1.8 9.4±2.1 <0.001
2-h postprandial glucose (mmo1/L) 9.2±4.1 13.9± 4.5 <0.001
HbA1c (%) 5.6±1.2 9.2±2.1 <0.001
Blood urea nitrogen (mmo1/L) 5.42±2.35 6.03±2.51 0.045
Creatinine (μmo1/L) 87±16 91±18 0.59
Medical treatments    
 ACEI or ARB (%) 46(31.3) 37(32.5) 0.841
 Calcium channel blocker (%) 14(9.5) 12(10.5) 0.789
 Statins* (%) 121(82.3) 97(85.1) 0.549
 Metformin (%) 52(35.4) 45(39.5) 0.497
 Sulphonylureas (%) 56(38.1) 37(32.5) 0.345
 Alpha-glucosidase (%) 54(36.7) 46(40.3) 0.551
 PPAR-gamma agonist (%) 23(15.6) 15(13.2) 0.572
  1. Data are mean ± SD or number (%).
  2. Abbreviation: HbA1c, Glycosylated hemoglobin A1c; HDL, High-density lipoprotein.
  3. LDL, low-density lipoprotein; ACEI, andgiotensin-converting enzyme inhibitor.
  4. ARB, angiotensin II receptor blocker.
  5. *Statins: mainly simvastatin, pravastatin and atorvastatin.