Table 2.
Patient characteristics compared between 2005-09 and 2010-11 time periods.
| 2010-2011 n=5570 | 2005-2009 n=7815 | P Value | |
|---|---|---|---|
| Preoperative Characteristic | |||
| Age, median years (IQR) | 56.0 (45.0-67.0) | 56.0 (44.0-68.0) | 0.45 |
| Sex (Female %) | 45.1 | 43.9 | 0.26 |
| Race (White %) | 76.2 | 77.7 | 0.078 |
| Asian | 2.9 | 1.3 | <0.001 |
| Black | 7.3 | 6.3 | 0.060 |
| Hispanic | 4.0 | 4.0 | 0.89 |
| Native American | 0.9 | 1.7 | <0.001 |
| Unknown/Other | 8.6 | 9.1 | 0.47 |
| Laparoscopic procedure (%) | 27.2 | 18.3 | <0.001 |
| BMI median (IQR) | 26.4 (22.9-30.5) | 26.4 (23.0-30.5) | 0.55 |
| Diabetes (%) | 11.7 | 11.2 | 0.55 |
| Smoking (%) | 17.6 | 17.9 | 0.69 |
| Steroid treatment in past 30 days (%) | 12.7 | 13.3 | 0.47 |
| Dyspnea at rest or with exertion (%) | 5.6 | 7.4 | <0.001 |
| Poor functional status (%) | 2.9 | 3.2 | 0.38 |
| Cardiovascular problems (%) | 5.2 | 7.9 | <0.001 |
| Congestive heart failure (%) | 0.3 | 0.4 | 0.33 |
| Hypertension medication (%) | 37.1 | 37.5 | 0.64 |
| Disseminated cancer (%) | 4.8 | 5.4 | 0.18 |
| Large weight loss (%) | 6.0 | 6.9 | 0.076 |
| Impaired clotting (%) | 2.8 | 3.1 | 0.55 |
| Recent chemo- or radio-therapy (%) | 15.3 | 21.3 | <0.001 |
| Hematocrit, median % (IQR) | 38.4 (34.9-41.3) | 38.5 (35.0-41.7) | 0.065 |
| Leukocyte count, median 1000/dL (IQR) | 6.5 (5.1-8.4) | 6.6 (5.2-8.4) | 0.065 |
| Post-op Diagnosis (%) | |||
| Benign disease | 15.6 | 14.4 | 0.21 |
| Cancer | 56.1 | 57.0 | 0.46 |
| Inflammatory bowel disease | 28.3 | 28.6 | 0.77 |
P values represent comparison between two time periods and are false discovery rate-adjusted.
IQR: Interquartile Range; BMI: Body Mass Index