Patient demographics by BMI and glycemic status
| Patients with diabetes (n=8046) | Underweight (n=227) | Normal BMI (n=1697) | Overweight (n=2137) | Obese grade 1 (n=1900) | Obese grade 2 (n=1105) | Obese grade 3 (n=980) | p Value |
|---|---|---|---|---|---|---|---|
| Age, years | 62.1±17.8 | 66.2±16.1 | 66.1±13.1 | 63.9±12.6 | 61.3±12.1 | 56.4±13.4 | <0.0001 |
| Male, n (%) | 112 (49.3) | 918 (54.1) | 1242 (58.1) | 1002 (52.7) | 483 (43.7) | 317 (32.3) | <0.0001 |
| African-American, n (%) | 134 (59.0) | 842 (49.6) | 947 (44.3) | 872 (45.9) | 550 (49.8) | 550 (56.1) | <0.0001 |
| BMI, kg/m2 | 16.8±1.5 | 22.3±1.8 | 27.5±1.4 | 32.4±1.5 | 37.3±1.4 | 45.6±4.7 | <0.0001 |
| BG at admission, mmol/L | 8.8±3.8 | 9.0±3.6 | 9.1±3.3 | 9.4±3.4 | 9.7±3.4 | 9.9±3.6 | <0.0001 |
| Mean in-hospital BG, mmol/L | 8.1±2.4 | 8.5±2.4 | 8.6±2.2 | 9.0±2.4 | 9.1±2.3 | 9.2±2.6 | <0.0001 |
| Maximum hospital BG, mmol/L | 15.1±7.5 | 15.1±7.3 | 14.9±6.7 | 15.1±6.4 | 15.2±5.8 | 15.1±6.1 | 0.82 |
| Insulin treatment, n (%) | 138 (60.8) | 1152 (67.9) | 1550 (72.5) | 1476 (77.7) | 901 (81.5) | 767 (78.3) | <0.0001 |
| Length of stay, median, days | 5.0 (3.0–9.0) | 5.0 (3.0–8.0) | 4.0 (2.0–8.0) | 4.0 (2.0–7.0) | 4.0 (2.0–7.0) | 4.0 (2.0–8.0) | <0.0001 |
| Patients without diabetes (n=21 577) | Underweight (n=1008) | Normal BMI (n=7056) | Overweight (n=6823) | Obese grade 1 (n=3765) | Obese grade 2 (n=1629) | Obese grade 3 (n=1296) | p Value |
| Age at admission, years | 58.4±19.5 | 59.6±18.4 | 60.2±15.3 | 58.0±14.8 | 55.2±14.0 | 50.7±14.0 | <0.0001 |
| Male, n (%) | 417 (41.4) | 3481 (49.3) | 3844 (56.3) | 1876 (49.8) | 654 (40.1) | 382 (29.5) | <0.0001 |
| African-American, n (%) | 428 (42.5) | 2244 (31.8) | 2045 (30.0) | 1313 (34.9) | 699 (42.9) | 701 (54.1) | <0.0001 |
| BMI, kg/m2 | 16.7±1.6 | 22.3±1.8 | 27.4±1.4 | 32.2±1.4 | 37.2±1.4 | 45.2±4.6 | <0.0001 |
| BG at admission, mmol/L | 6.5±1.9 | 6.7±1.8 | 6.9±1.9 | 7.1±2.0 | 7.2±2.1 | 7.1±2.0 | <0.0001 |
| Mean in-hospital BG, mmol/L | 6.3±1.2 | 6.4±1.2 | 6.7±1.3 | 6.8±1.4 | 6.9±1.4 | 6.8±1.4 | <0.0001 |
| Maximum hospital BG, mmol/L | 9.3±4.9 | 8.8±4.2 | 8.9±3.9 | 9.1±4.4 | 9.3±4.4 | 9.1±3.9 | <0.0001 |
| Insulin treatment, n (%) | 205 (20.3) | 1339 (19.0) | 1449 (21.2) | 832 (22.1) | 387 (23.8) | 304 (23.5) | <0.0001 |
| Length of stay, median days | 5.0 (3.0–10.0) | 4.0 (2.0–7.0) | 4.0 (2.0–7.0) | 4.0 (2.0–7.0) | 3.0 (2.0–6.0) | 3.5 (2.0–7.0) | <0.0001 |
BG, blood glucose; BMI, body mass index.