Demographics and surgical characteristics of patients who received chemoprophylaxis vs patients who did not.
| Characteristics | Inpatient Chemoprophylaxis | ||
| No (n = 316) | Yes (n = 316) | P | |
| Patient Demographics | |||
| BMI | 28.55 ± 7.79 | 29.72 ± 6.69 | 0.042 |
| CCI | 4.25 ± 2.50 | 4.15 ± 2.37 | 0.567 |
| Age, y | 65.31 ± 11.78 | 66.44 ± 12.31 | 0.239 |
| ASA grade | 2.39 ± 0.57 | 2.57 ± 0.58 | <0.001 |
| Gender (% woman) | 152 (48.1%) | 133 (42.1%) | 0.129 |
| Race | 0.863 | ||
| White | 203 (64.2%) | 206 (65.2%) | |
| African American | 36 (11.4%) | 30 (9.5%) | |
| Asian | 24 (7.6%) | 27 (8.5%) | |
| Other | 53 (16.8%) | 53 (16.8%) | |
| Payor type (% private) | 209 (66.1% ) | 197 (62.3%) | 0.113 |
| Surgical Characteristics | |||
| Fusion | 213 (67.4%) | 209 (66.1%) | 0.736 |
| Levels fused | 0.97 ± 0.85 | 1.11 ± 1.01 | 0.056 |
| Laminectomy upper vertebra | 22.28 ± 1.02 | 22.25 ± 0.997 | 0.723 |
| Laminectomy lower vertebra | 23.93 ± 2.070 | 24.14 ± 1.58 | 0.447 |
| MIS vs open (% open) | 25 (7.9%) | 14 (4.4%) | 0.069 |
| EBL, mL | 237.22 ± 274.03 | 281.50 ± 310.92 | 0.058 |
| Operative time, min | 209.87 ± 86.32 | 213.37 ± 88.24 | 0.614 |
| Intraoperative complications | 14 (4.4%) | 25 (7.9%) | 0.069 |
Abbreviations: ASA, American Society of Anesthesiologists; BMI, body mass index; CCI, cranial cervical instability; EBL, estimated blood loss; MIS, minimally invasive surgery.
Note: Data presented as mean ± SD or n (%). Bolded values are statistically significant (P < 0.05).