Table I.
Univariate Comparison of Patient demographics and procedural characteristics between non-readmitted and readmitted patients*
| Characteristic | Not Readmitted n=16262 | Readmitted n= 1503 | P Value |
|---|---|---|---|
| Demographics | |||
| Age, Mean (SD), yrs | 79.87(11.42) | 80.52(10.66) | 0.0257 |
| Gender | |||
| Female | 71.09 | 66.13 | <0.0001 |
| Race | <0.0001 | ||
| Black | 2.87 | 3.73 | |
| White | 73.61 | 82.97 | |
| Other | 23.51 | 13.31 | |
| BMI (kg/m2) | 0.0546 | ||
| ≤ 35.0 | 95.39 | 94.24 | |
| >35 | 4.61 | 5.76 | |
| Comorbidities | |||
| Current Alcohol Abuse | 4.38 | 3.85 | 0.7719 |
| Current Smoker | 11.94 | 13.51 | 0.0749 |
| Recent Weight Loss | 1.35 | 1.53 | 0.5569 |
| Dyspnea | 6.77 | 10.91 | <0.0001 |
| COPD | 10.74 | 16.1 | <0.0001 |
| CHF | 3.31 | 5.72 | <0.0001 |
| Hypertension | 66.57 | 75.18 | <0.0001 |
| Diabetes | 17.1 | 20.69 | 0.0004 |
| PVD | 2.22 | 5.38 | 0.0247 |
| Disseminated Cancer | 2.36 | 3.66 | 0.0019 |
| Steroid Use | 5.65 | 7.72 | 0.0011 |
| Bleeding Disorder | 16.01 | 23.55 | <0.0001 |
| Dialysis | 1.76 | 3.26 | <0.0001 |
| Chemotherapy within 30 Days | 1.32 | 0.77 | 1 |
| Radiation Therapy w/in 90 Days | 0.6 | 0 | 1 |
| Prior Operation w/in 30 Days | 0.71 | 2.26 | 0.0902 |
| ASA Class | <0.0001 | ||
| 1 or 2 – No or Mild disturbance | 20.82 | 11.56 | |
| 3 - Severe Disturbance | 61.83 | 63.24 | |
| 4 - Life Threatening Disturbance | 17.35 | 25.2 | |
| Operative Variables | |||
| Outpatient | 0.31 | 0.2 | 0.6242 |
| Emergency Case | 33.54 | 29.74 | 0.0028 |
| Operative time, hours | |||
| > 4 | 0.66 | 1 | 0.1259 |
| ≤ 4 | 99.34 | 99 | |
| Total Case Relative Value Units | 18.29(2.68) | 18.42(3.05) | 0.1289 |
| Length of stay, days | 0.0018 | ||
| > 4 | 61.04 | 65.14 | |
| ≤ 4 | 38.96 | 34.86 | |
| Case Type | 0.0004 | ||
| CPT 27125 – Hemiarthroplasty | 17.11 | 18.83 | |
| CPT 27130 Total Hip Arthroplasty | 4.24 | 4.86 | |
| CPT 27236 ORIF | 28.78 | 32.34 | |
| CPT 27244 Plate/Screws | 17.64 | 14.5 | |
| CPT 27245 – IM Rod | 32.23 | 29.47 |
*All values listed as percentages except where noted.