Table 1.
Summary of Patient Demographic Characteristics
| Variable | Response | |
|---|---|---|
| Age (years) | N | 1272 |
| Mean (SD) | 41.68 (23.83) | |
| Median | 46 | |
| Race | White or Caucasian | 1009 (79.3%) |
| Black or African American | 36 (2.8%) | |
| Other race | 96 (7.5%) | |
| Prefer not be to answer | 131 (10.3%) | |
| Sex | Female | 963 (75.7%) |
| Male | 309 (24.3%) | |
| BMI Categories | Underweight | 153 (12.0%) |
| Normal weight | 585 (46.0%) | |
| Overweight | 292 (23.0%) | |
| Obese | 140 (11.0%) | |
| Data not recorded | 102 (8.0%) | |
| ASA | I - healthy | 224 (17.6%) |
| II - mild systemic disease | 464 (36.4%) | |
| III - severe systemic disease | 77 (6.1%) | |
| IV - incapacitating disease | 2 (0.1%) | |
| Data not recorded | 505 (39.7%) | |
| Estimated blood loss (cc/mL) | N | 420 |
| Mean (SD) | 102.4 (100.5) | |
| Median | 50 | |
| Time in operating room (hours) | N | 1272 |
| Mean (SD) | 1.59 (1.33) | |
| Median | 1.22 | |
| Hypertension | Not noted | 564 (44.3%) |
| Present | 63 (5.0%) | |
| Data not recorded | 645 (5.7%) | |
| Diabetes | Not noted | 611 (48.0%) |
| Present | 16 (1.3%) | |
| Data not recorded | 645 (50.7%) | |
| Tobacco use | Never smoker | 594 (46.7%) |
| Smoker | 46 (3.6%) | |
| Quit smoking | 244 (19.2%) | |
| Data not recorded | 388 (30.5%) |
ASA, American Society of Anesthesiologist physical status classification system; BMI, body mass index.