Table 2.
Patient demographic and clinical characteristics by BMI category.
| Normal weight (n=716) | Overweight (n=702) | Obese (n=686) | p value | |
|---|---|---|---|---|
| Age, years | 55.8 ± 16.3 | 56.6 ± 14.5 | 54.3 ± 14.1 | 0.0122 |
| Male gender, n (%) | 345 (48.2) | 402 (57.3) | 305 (44) | <0.0001 |
| Race | ||||
| Caucasians, n (%) | 476 (72.1) | 467 (70.3) | 430 (67) | 0.25 |
| African Americans, n (%) | 164 (24.9) | 180 (27.1) | 196 (30.4) | |
| Hispanic, n (%) | 12 (2.3) | 11 (2.1) | 16 (3.1) | 0.51 |
| DM/hyperglycemia, n (%) | ||||
| Diabetic | 119 (16.6) | 142 (20.2) | 192 (28.0) | <0.0001 |
| Non-diabetic w/BG >=140 | 403 (56.3) | 375 (53.4) | 344 (50.2) | |
| Non-diabetic w/BG <140 | 194 (27.1) | 185 (26.4) | 150 (21.9) | |
| ICU, n (%) | 233 (32.5) | 252 (35.9) | 257 (37.5) | 0.14 |
| Open surgery, n (%) | 547 (76.4) | 514 (73.2) | 482 (70.3) | 0.0342 |
| Mean admission BG, mmol/L | 132.8 ± 37.0 | 138.1 ± 43.1 | 144.9 ± 49.3 | 0.001 |
| Mean in-hospital BG, mmol/L | 122.7 ± 20.7 | 128.9 ± 25.3 | 132.7 ± 28.1 | <0.0001 |
| Mild hypoglycemia, n (%) | 105 (14.7) | 72 (10.3) | 76 (11.1) | 0.0251 |
| Severe hypoglycemia, n (%) | 14 (2.0) | 16 (2.3) | 16 (2.3) | 0.87 |
| LOS, days | 8.0 (5.0–14.0) | 8.0 (5.0–14.0) | 7.0 (5.0–12.0) | 0.431 |
| Discharge to home, n (%) | 637 (89.0) | 626 (89.2) | 596 (86.9) | 0.33 |
| Readmission in 30 days, n (%) | 116 (16.2) | 115 (16.4) | 96 (14.0) | 0.39 |
| Complications | ||||
| Composite, n (%) | 170 (23.7) | 173 (24.6) | 202 (29.5) | 0.033 |
| In-hospital Mortality, n (%) | 21 (2.9) | 15 (2.1) | 18 (2.6) | 0.63 |
| Acute MI, n (%) | 14 (2.0) | 11 (1.6) | 8 (1.2) | 0.49 |
| Wound infection, n (%) | 63 (8.8) | 62 (8.8) | 67 (9.8) | 0.78 |
| Pneumonia, n (%) | 66 (9.2) | 49 (7.0) | 51 (7.4) | 0.26 |
| Sepsis, n (%) | 4 (0.6) | 3 (0.4) | 2 (0.3) | 0.75 |
| Acute kidney injury, n (%) | 85 (11.9) | 104 (14.8) | 140 (20.5) | <0.0001 |
| Total hospitalization Costs, USD | 58,313 (50,906, 65,720) | 58,173 (52,226, 64,120) | 66,633 (56,489, 76,776) | 0.74 |