Table 3.
HRs Comparing Use of Bariatric Procedures and Its Association With 90-Day Post-TKA Complications in Elderly Medicare Patients, 2004 to 2016
| Complication | Bariatric Procedure (Reference: None) | HR | 95% CI | P Value |
| Acute MI | Band gastroplasty | 1.65 | 0.79-3.44 | 0.184 |
| Sleeve gastrectomy | 0.82 | 0.21-3.28 | 0.780 | |
| Gastric bypass | 1.01 | 0.38-2.69 | 0.984 | |
| Procedure not specified | 1.00 | 0.73-1.73 | 0.985 | |
| DVT | Band gastroplasty | 1.34 | 0.77-2.35 | 0.302 |
| Sleeve gastrectomy | 1.24 | 0.56-2.76 | 0.596 | |
| Gastric bypass | 1.31 | 0.70-2.42 | 0.398 | |
| Procedure not specified | 1.04 | 0.85-1.29 | 0.685 | |
| Death | Band gastroplasty | 0.61 | 0.20-1.88 | 0.385 |
| Sleeve gastrectomy | 1.18 | 0.44-3.16 | 0.743 | |
| Gastric bypass | 1.90 | 1.00-3.64 | 0.052 | |
| Procedure not specified | 1.29 | 1.00-1.65 | 0.048 | |
| Dislocation | Band gastroplasty | 1.97 | 0.68-6.13 | 0.241 |
| Sleeve gastrectomy | 1.28 | 0.18-9.11 | 0.803 | |
| Gastric bypass | 2.26 | 0.73-7.03 | 0.158 | |
| Procedure not specified | 1.27 | 0.81-1.99 | 0.304 | |
| Embolism | Band gastroplasty | 1.27 | 0.68-2.35 | 0.453 |
| Sleeve gastrectomy | 1.43 | 0.64-3.18 | 0.386 | |
| Gastric bypass | 1.39 | 0.68-2.86 | 0.365 | |
| Procedure not specified | 0.89 | 0.70-1.13 | 0.345 | |
| Implant failure | Band gastroplasty | 1.24 | 0.70-2.18 | 0.464 |
| Sleeve gastrectomy | 2.54 | 1.45-4.46 | 0.001 | |
| Gastric bypass | 1.57 | 0.88-2.81 | 0.130 | |
| Procedure not specified | 1.71 | 1.47-1.99 | <0.001 | |
| Periprosthetic infection | Band gastroplasty | 2.32 | 1.54-3.50 | <0.001 |
| Sleeve gastrectomy | 1.76 | 0.92-3.37 | 0.090 | |
| Gastric bypass | 0.82 | 0.39-1.72 | 0.608 | |
| Procedure not specified | 1.96 | 1.69-2.26 | <0.001 | |
| Pneumonia | Band gastroplasty | 1.44 | 0.87-2.37 | 0.158 |
| Sleeve gastrectomy | 0.94 | 0.42-2.09 | 0.871 | |
| Gastric bypass | 2.08 | 1.31-3.29 | 0.002 | |
| Procedure not specified | 1.35 | 1.14-1.59 | <0.001 | |
| All cause readmission | Band gastroplasty | 1.34 | 1.16-1.55 | <0.001 |
| Sleeve gastrectomy | 1.37 | 1.12-1.68 | 0.002 | |
| Gastric bypass | 1.24 | 1.06-1.46 | 0.007 | |
| Procedure not specified | 1.44 | 1.38-1.51 | <0.001 | |
| Renal failure | Band gastroplasty | 1.39 | 0.96-2.01 | 0.083 |
| Sleeve gastrectomy | 1.63 | 1.06-2.51 | 0.026 | |
| Gastric bypass | 1.13 | 0.72-1.77 | 0.602 | |
| Procedure not specified | 1.47 | 1.31-1.64 | <0.001 | |
| Revision | Band gastroplasty | 1.90 | 1.22-2.94 | 0.004 |
| Sleeve gastrectomy | 1.45 | 0.73-2.89 | 0.285 | |
| Gastric bypass | 0.79 | 0.38-1.66 | 0.539 | |
| Procedure not specified | 1.68 | 1.44-1.96 | <0.001 | |
| Wound dehiscence | Band gastroplasty | 2.54 | 1.59-4.05 | <0.001 |
| Sleeve gastrectomy | 1.98 | 0.95-4.13 | 0.068 | |
| Gastric bypass | 1.58 | 0.82-3.04 | 0.168 | |
| Procedure not specified | 2.11 | 1.78-2.52 | <0.001 |
CI = confidence interval, HR = hazard ratio.