TABLE I.
Demographic and Comorbidity Profile of the Shoulder Arthroplasty Cohort*
| Variable | All TSAs | Nonfracture | Fracture | P Value |
|---|---|---|---|---|
| Case-level demographics | ||||
| Volume (no. [%]) | 108,667 (100) | 96,104 (88) | 12,563 (12) | NA |
| 5-year mortality (%) | 16.6 | 14.9 | 29.9 | <0.001 |
| Age at surgery, all† (yr) | 74.3 | 74.0 | 76.6 | <0.001 |
| Age at death, if deceased† (yr) | 81.0 | 80.5 | 82.7 | <0.001 |
| Female (%) | 62.7 | 59.8 | 84.9 | <0.001 |
| Non-White (%) | 5.8 | 5.9 | 4.5 | <0.001 |
| Case-level comorbidities (%) | ||||
| BMI > 40 kg/m2 | 4.3 | 4.3 | 4.6 | 0.07 |
| CHF | 6.0 | 5.6 | 8.7 | <0.001 |
| COPD | 10.8 | 10.6 | 12.4 | <0.001 |
| Cancer | 1.4 | 1.2 | 2.3 | <0.001 |
| Diabetes | 21.7 | 21.1 | 26.6 | <0.001 |
| Kidney disease | 1.4 | 1.0 | 3.8 | <0.001 |
| Liver disease | 0.4 | 0.4 | 0.7 | <0.001 |
| Hospital-level characteristics | ||||
| Annual surgical volume† (no.) | 2,622 | 2,506 | 2,167 | NA |
| Urban (%) | 79.9 | 80.4 | 82.9 | 0.03 |
| Bed size† (no.) | 215.4 | 218.1 | 237.2 | 0.002 |
| Teaching (%) | 37.4 | 37.5 | 40.9 | 0.01 |
*
NA = not applicable, BMI = body mass index, CHF = congestive heart failure, COPD = chronic obstructive pulmonary disease.
†
Values are given as the mean.