Table 1. Participating surgeon characteristics.
% represents the percentage of all patients enrolled within the same demographic region.
| Demographic Region | Clinical Site | Surgeon No. | Patients (%) |
|---|---|---|---|
| Midwest (n=1453) | Cleveland Clinic (n=415) | 1 | 96 (6.6%) |
| 2 | 11 (0.8%) | ||
| 3 | 308 (21.2%) | ||
| The Ohio State University (n=606) | 1 | 102 (7.0%) | |
| 2 | 504 (34.7%) | ||
| University of Iowa (n=137) | 1 | 86 (5.9%) | |
| 2 | 51 (3.5%) | ||
| Washington University, St. Louis (n=295) | 1 | 25 (1.7%) | |
| 2 | 48 (3.3%) | ||
| 3 | 222 (15.3%) | ||
| West (n=108) | University of Colorado (n=108) | 1 | 76 (70.6%) |
| 2 | 11 (10.1%) | ||
| 3 | 21 (19.3%) | ||
| Southeast (n=450) | Vanderbilt University (n=450) | 1 | 40 (8.9%) |
| 2 | 33 (7.3%) | ||
| 3 | 18 (4.0%) | ||
| 4 | 359 (80.0%) | ||
| Northeast (n=138) | Hospital for Special Surgery (n=138) | 1 | 138 (100%) |