Table 1.
Preoperative Characteristics for BMI Strata
| Characteristic | Normal/Overweight (BMI 18.5–30) n=8051 | Obese (BMI 30–40) n=4797 | Morbidly Obese (BMI >40) n=789 |
|---|---|---|---|
| Age | 67±11 | 64±10* | 61±10* |
| Female sex | 2188 (27%) | 1429 (30) | 378 (48%)* |
| DM | 2420 (31%) | 1429 (51%)* | 378 (65%)* |
| Hypertension | 6302 (80%) | 4257 (89%)* | 745 (94%)* |
| ESRD | 230 (3%) | 124 (3%) | 38 (5%)* |
| CHF | 1762 (22%) | 1047 (22%) | 213 (27%)* |
| LV EF (%) | 55 (45, 60) | 55 (45, 60) | 55 (45, 60) |
| Chronic lung disease | 1723 (24%) | 1071 (22%) | 630 (79%) |
| PASP, mm Hg | 33 (27.42) | 36 (29, 45)* | 40 (32, 51)* |
| CVA | 1277 (17%) | 682 (14%)* | 106 (13%) |
| STS‐PROM | 1.4 (0.7, 3.1) | 1.1 (0.6, 2.3)* | 1.4 (0.7, 3.0) |
All continuous variables are presented as median and 25% and 75% percentiles. BMI indicates body mass index; CHF, congestive heart failure; CVA, history of cerebrovascular accident; DM, diabetes mellitus; LVEF, left ventricular ejection fraction; ESRD, end‐stage renal disease; PASP, pulmonary artery systolic pressure; STS PROM, Society of Thoracic Surgery Predicted Risk of Mortality.
*P<0.05 compared to normal weight BMI Strata.