Table 2.
Demographics and Comorbidities of Patients Undergoing Laparoscopic Roux-en-Y Gastric Bypass
| Variable | Total (n = 26238) | Male (n = 4962) | Female (n = 21276) | P-value |
|---|---|---|---|---|
| Demographics | ||||
| Age ≥ 65 years | 1302 (5.00%) | 360 (7.30%) | 942 (4.40%) | <0.0001 |
| BMI 35 – 39 | 3533 (13.50%) | 578 (11.70%) | 2955 (13.90%) | <0.0001 |
| BMI 40 – 49 | 12405 (47.30%) | 2232 (45.00%) | 10173 (47.80%) | 0.0003 |
| BMI ≥ 50 | 6769 (25.80%) | 1526 (30.80%) | 5243 (24.60%) | <0.0001 |
| Black | 3428 (13.10%) | 500 (10.10%) | 2928 (13.80%) | <0.0001 |
| Native American | 92 (0.40%) | 7 (0.10%) | 85 (0.40%) | 0.01 |
| White | 17920 (68.30%) | 3553 (71.60%) | 14367 (67.50%) | <0.0001 |
| Hispanic | 2915 (11.10%) | 514 (10.40%) | 2401 (11.30%) | 0.06 |
| Smoker | 2189 (8.30%) | 413 (8.30%) | 1776 (8.40%) | 0.96 |
| Asian | 200 (0.80%) | 46 (0.90%) | 154 (0.70%) | 0.14 |
| Pacific Islander | 233 (0.90%) | 59 (1.20%) | 174 (0.80%) | 0.01 |
| Comorbidities | ||||
| Dyspnea | 3309 (12.60%) | 671 (13.50%) | 2638 (12.40%) | 0.03 |
| Hypertension requiring medication | 13018 (49.60%) | 3323 (67.00%) | 9695 (45.60%) | <0.0001 |
| Diabetes | 8473 (32.30%) | 2244 (45.20%) | 6229 (29.30%) | <0.0001 |
| Chronic Obstructive Pulmonary Disease | 520 (2.00%) | 131 (2.60%) | 389 (1.80%) | 0.0002 |
| Ventilation | 2 (0.01%) | 0 (0%) | 2 (0.01%) | 0.49 |
| Ascites | 4 (0.02%) | 1 (0.02%) | 3 (0.01%) | 0.76 |
| CHF | 85 (0.30%) | 34 (0.70%) | 51 (0.20%) | <0.0001 |
| Acute Renal Failure | 3 (0.01%) | 1 (0.02%) | 2 (0.01%) | 0.52 |
| Currently on Dialysis | 44 (0.20%) | 15 (0.30%) | 29 (0.1%) | 0.01 |
| Disseminated Cancer | 16 (0.10%) | 7 (0.10%) | 9 (0.04%) | 0.01 |
| Open Wound Infection | 83 (0.30%) | 37 (0.80%) | 46 (0.20%) | <0.0001 |
| Steroid Use (for chronic condition) | 429 (1.60%) | 58 (1.20%) | 371 (1.70%) | 0.004 |
| >10% Body Weight Loss | 36 (0.10%) | 12 (0.20%) | 24 (0.10%) | 0.03 |
| Bleeding Disorder | 258 (1.00%) | 69 (1.4%) | 189 (0.90%) | 0.0012 |
| Pre-operative Blood Transfusion | 6 (0.02%) | 3 (0.06%) | 3 (0.01%) | 0.05 |
BMI, body mass index in kg/m2; Smoker, current smoker within one year; Diabetic, diabetes mellitus requiring therapy with non-insulin agents or insulin; Ascites, ascites within 30 days prior to surgery; History of congestive heart failure within 30 days prior surgery; >10% body weight loss, greater than 10% loss in body weight in last 6 months; Pre-operative Blood Transfusion, pre-operative transfusion of greater than or equal to 1 unit of whole/packed red blood cells in 72 h prior to surgery.