Table 1. Patient demographics of unmatched and matched cohorts.
| Unmatched | Matched | |||||
|---|---|---|---|---|---|---|
| Resident/Fellow | Attending | p -Value | Resident/Fellow | Attending | p -Value | |
| Number of patients | 576 | 1,273 | 575 | 575 | ||
| Age (y) | 53.94 | 56.79 | 0.001 | 53.97 | 54.52 | 0.557 |
| Gender | ||||||
| Male | 188 | 360 | 0.057 | 188 | 163 | 0.109 |
| Female | 388 | 913 | 387 | 412 | ||
| Race | ||||||
| White | 395 | 1,049 | <0.001 | 395 | 413 | 0.029 |
| African American | 34 | 29 | 34 | 16 | ||
| Other | 18 | 37 | 18 | 27 | ||
| Unknown | 129 | 158 | 128 | 119 | ||
| BMI | 27.92 | 28.57 | 0.082 | 27.93 | 28.4 | 0.248 |
| Diabetes mellitus | ||||||
| Yes | 39 | 119 | 0.066 | 39 | 51 | 0.237 |
| No | 537 | 1,154 | 536 | 524 | ||
| Current smoker | ||||||
| Yes | 122 | 269 | 0.981 | 122 | 110 | 0.378 |
| No | 454 | 1,004 | 453 | 465 | ||
| Hypertension | ||||||
| Yes | 160 | 464 | <0.001 | 160 | 182 | 0.156 |
| No | 416 | 809 | 415 | 393 | ||
| History of COPD | ||||||
| Yes | 20 | 47 | 0.815 | 20 | 17 | 0.62 |
| No | 556 | 1,226 | 555 | 558 | ||
| Steroid use | ||||||
| Yes | 19 | 25 | 0.081 | 18 | 17 | 0.864 |
| No | 557 | 1,248 | 557 | 558 | ||
| ASA class | ||||||
| 1 | 123 | 238 | 0.007 | 123 | 120 | 0.798 |
| 2 | 337 | 683 | 336 | 330 | ||
| 3 | 110 | 332 | 110 | 121 | ||
| 4 | 6 | 20 | 6 | 4 | ||
| Anesthesia technique | ||||||
| General | 415 | 1,074 | <0.001 | 414 | 485 | <0.001 |
| Monitored anesthesia care | 22 | 71 | 22 | 25 | ||
| Regional | 137 | 123 | 137 | 62 | ||
| Other | 2 | 5 | 2 | 3 | ||
| CPT code | ||||||
| 25607 | 157 | 449 | <0.001 | 156 | 156 | 1.00 |
| 25608 | 155 | 408 | 155 | 155 | ||
| 25609 | 264 | 416 | 264 | 264 | ||
Abbreviations: ASA, American Society of Anesthesiologistsl; BMI, body mass index; COPD, chronic obstructive pulmonary disease; CPT, current procedural terminology.