Table 1.
Baseline characteristics of patients who underwent same-day discharge and inpatient RYGB
| Baseline characteristics | Same-day discharge, N = 2156 | Inpatient, N = 165,032 | p value |
|---|---|---|---|
| Age, years, mean ± SD | 44.5 ± 11.4 | 44.6 ± 11.5 | 0.84 |
| Female, n (%) | 1755 (81.4) | 133,085 (80.6) | 0.37 |
| Race, n (%) | |||
| African American | 336 (15.6) | 21,921 (13.3) | 0.002 |
| American Indian or Alaska native | 16 (0.7) | 950 (0.6) | 0.31 |
| Asian | 12 (0.5) | 949 (0.6) | 0.90 |
| Native Hawaiian or other Pacific islander | 8 (0.4) | 781(0.5) | 0.49 |
| White | 1530 (71) | 123,803 (75) | < 0.001 |
| Unknown/other | 254 (11.8) | 16,628 (10.1) | 0.009 |
| Preoperative BMI, kg/m2, mean ± SD | 45.8 ± 7.6 | 45.9 ± 7.6 | 0.72 |
| Highest BMI, kg/m2, mean ± SD | 47.8 ± 8.1 | 48.1 ± 8.1 | 0.07 |
| ASA classification, n (%) | |||
| ASA I | 4 (0.2) | 283 (0.2) | 0.87 |
| ASA II | 338 (15.7) | 26,781 (16.2) | 0.49 |
| ASA III | 1732 (80.3) | 131,225 (79.5) | 0.34 |
| ASA IV | 82 (3.8) | 6743 (4.1) | 0.51 |
| Comorbidities, n (%) | |||
| GERD | 773 (35.8) | 63,152 (38.2) | 0.02 |
| History of myocardial infarction | 31 (1.4) | 2132 (1.3) | 0.55 |
| Previous PCI | 31 (1.4) | 3136 (1.9) | 0.11 |
| Previous cardiac surgery | 18 (0.8) | 1497 (0.9) | 0.72 |
| Hypertension | 1078 (50) | 82,916 (50.2) | 0.82 |
| Hyperlipidemia | 586 (27.2) | 45,109 (27.3) | 0.87 |
| History of pulmonary embolism | 33 (1.5) | 1944 (1.2) | 0.13 |
| History of deep vein thrombosis | 37 (1.7) | 2885 (1.7) | 0.91 |
| Venous stasis | 9 (0.4) | 1726 (1) | 0.004 |
| Preoperative anticoagulation | 40 (1.8) | 4143 (2.5) | 0.05 |
| Renal insufficiency | 10 (0.5) | 783 (0.5) | 0.94 |
| Dialysis | 1 (0.04) | 240 (0.1) | 0.22 |
| Diabetes mellitus | 676 (31.3) | 54,344 (32.9) | 0.12 |
| COPD | 33 (1.5) | 2451 (1.5) | 0.86 |
| Current smoker within 1 year | 173 (8) | 13,090 (7.9) | 0.87 |
| Preoperative functional health status | |||
| Independent | 2145 (99.5) | 163,943 (99.3) | 0.39 |
| Partially dependent | 8 (0.4) | 802 (0.5) | 0.44 |
| Totally dependent | 3 (0.1) | 217 (0.1) | 0.92 |
| Ambulation limited | 23 (1.1) | 2051 (1.2) | 0.46 |
| OSA | 847 (39.3) | 71,850 (43.5) | < 0.001 |
| Preoperative steroids use | 25 (1.1) | 2649 (1.6) | 0.10 |
| Previous organ transplant | 1 (0.04) | 43 (0.02) | 0.45 |
| Previous surgery | 43 (2) | 2518 (1.5) | 0.07 |
| Preoperative IVC filter | 8 (0.4) | 749 (0.4) | 0.56 |
Abbreviations: ASA, American Society of Anesthesiologists; BMI, body mass index; GERD, gastroesophageal reflux disease; PCI, percutaneous coronary intervention; COPD, chronic obstructive pulmonary disease; OSA, obstructive sleep apnea; IVC, inferior vena cava. p values < 0.05 are denoted in bold