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Table 3 Comparison of clinical variables by HbA1c in patients without known diabetes (n = 630)

From: Prevalence of Dysglycemia Among Coronary Artery Bypass Surgery Patients with No Previous Diabetic History

HbA1c (%) No DM
< 5.7 (n = 207)
Increased risk for DM
5.7-6.4 (n = 356)
DM
≥ 6.5 (n = 67)
P value
Age (years) Mean 64.6 ± 12.3 Mean 65.8 ± 10.6 Mean 64.9 ± 9.9 0.592
Female 38 (18.4%) 89 (25.0%) 21 (31.3%) 0.055
Male 169 (81.6%) 267 (75.0%) 46 (68.7%)  
Race Caucasian 195 (94.0%) Caucasian 316 (88.8%) Caucasian 60 (89.6%) 0.970
  Black 3 (1.5%) Black 14 (3.9%) Black 2 (3.0%)  
  Asian 0 Asian 7 (2.0%) Asian 2 (3.0%)  
  Other 9 (4.4%) Other 19 (5.3%) Other 1 (1.5%)  
Insurance Status Medicare 101 (48.8%) Medicare 194 (54.5%) Medicare 31 (46.3%) 0.479
  Commercial 82 (39.6%) Commercial 127 (35.7%) Commercial 28 (41.8%)  
  Medicaid 18 (8.7%) Medicaid 29 (8.2%) Medicaid 8 (11.9%)  
  Other 6 (2.9%) Other 6 (1.7%) Other 0  
Current Smoker 92 (44.4%) 160 (45.0%) 28 (41.8%) 0.893
Hypertension 158 (76.3) 277 (77.8%) 51 (76.1%) 0.902
Peripheral Vascular Disease 21 (10.1%) 29 (8.2%) 8 (11.9%) 0.523
Myocardial Infarction 84 (40.6%) 170 (47.8%) 34 (50.8%) 0.176
Congestive Heart Failure 24 (11.6%) 38 (10.7%) 13 (19.4%) 0.127
Dyslipidemia 148 (71.5%) 265 (74.4%) 52 (77.6%) 0.564
Minimally Invasive CABG* 83 (40.1%) 131 (36.0%) 18 (26.9%) 0.149
Median Sternotomy CABG 124 (59.9%) 225 (63.2%) 49 (73.1%) 0.149
Emergent Procedure 3 (1.5%) 9 (2.5%) 3 (4.5%)  
Urgent Procedure 153 (73.9%) 243 (68.3%) 54 (80.6%)  
Elective Procedure 51 (24.6%) 104 (29.2%) 10 (15.0%) 0.420
Number of Vessels Revascularized Mean 3.1 ± 1.14 Mean 3.1 ± 1.14 Mean 3.6 ± 1.16 0.009
BMI (%) Mean 27.7 ± 4.9 Mean 28.5 ± 5.4 Mean 29.5 ± 5.4 0.031
  1. BMI - Body Mass Index; CABG - Coronary Artery Bypass Graft; DM - Diabetes Mellitus; *Coronary Artery Bypass Grafting via small left thoracotomy.