Table 1.
Patient demographics by surgeon specialty.
| Characteristic | Orthopaedic Surgery Value N (%) |
Patients for whom characteristic was determined, (N) | Neurosurgery Value N (%) |
Patients for whom characteristic was determined, (N) | Chi Square or T-test p-Value |
|---|---|---|---|---|---|
| Age, mean (SD) | 53.3(11.3) | 4611 | 53.8(11.6) | 13356 | 0.0143* |
| Sex (% male) | 2287(49.6) | 4611 | 6494(48.6) | 13352 | 0.2599 |
| BMI ≥ 30 | 2075(45.2) | 4588 | 5876(44.2) | 13290 | 0.2339 |
| ASA ≥ 3 | 1654(35.9) | 4609 | 5443(40.8) | 13333 | <0.00001* |
| Diabetes Mellitus | 628(13.6) | 4611 | 2036(15.2) | 13356 | 0.0074* |
| History of Cardiac Disease | 41(0.9) | 4611 | 110(0.8) | 13356 | 0.6741 |
*Significant value.
† SD – standard deviation, BMI – body mass index; ASA – American Society of Anesthesiologists.