Table 2.
Association between month of admission (July v. August – June) and inpatient outcomes in shoulder arthroplasty
| |
Month of Admission
|
July, OR (95% CI) † | P | |
|---|---|---|---|---|
| July | August-June | |||
| Mortality, % | 0.23 | 0.13 | 1.6 (1.0-2.5) | 0.020 |
| Combined adverse events, % | 12 | 12 | 0.97 (0.92-1.0) | 0.26 |
| Myocardial infarction | 0.37 | 0.29 | 1.5 (1.0-2.0) | 0.007 |
| Pneumonia | 0.91 | 1.1 | 0.95 (0.79-1.1) | 0.61 |
| Deep venous thrombosis | 0.15 | 0.25 | 0.62 (0.40-1.0) | 0.038 |
| Pulmonary embolism | 0.32 | 0.26 | 1.4 (1.0-1.9) | 0.042 |
| Surgical site infection | 0.28 | 0.27 | 0.91 (0.63-1.3) | 0.61 |
| Acute renal failure | 0.84 | 1.2 | 0.79 (0.65-1.0) | 0.016 |
| Gastrointestinal complication | 0.22 | 0.28 | 0.71 (0.48-1.1) | 0.098 |
| Mechanical ventilation | 0.22 | 0.28 | 0.71 (0.48-1.1) | 0.098 |
| Acute posthemorrhagic anemia | 10 | 9.9 | 1.0 (0.98-1.1) | 0.19 |
| Transfusion, % | 8.8 | 8.9 | 0.99 (0.94-1.1) | 0.95 |
| Length of stay in days, mean±SD | 2.8±2.8 | 2.7±2.7 | 0.97 (0.92-1.0)* | 0.22 |
| Non-homebound discharge, % | 32 | 31 | 1.0 (0.96-1.1) | 0.96 |
†
Adjusted for age, sex, race, income, insurance, Elixhauser comorbidity, diagnosis, procedure, and hospital characteristics.
*
Calculated for prolonged length of stay (>75th percentile).