Table 2.
Associations between perioperative transfusion and factors of interest
| OR (95%CI) | aOR (95%CI) | |
| Age | ||
| <70 yr | 1 | 1 |
| ≥70 yr | 1.50 (1.19, 1.88) | 1.10 (0.83, 1.47) |
| Sex | ||
| Male | 1 | 1 |
| Female | 1.31 (1.08, 1.58) | 1.19 (0.97, 1.45) |
| Type of admission | ||
| Elective | 1 | 1 |
| Emergency | 1.90 (1.45, 2.50) | 1.42 (1.07, 1.87) |
| Insurance status | ||
| Medicare/Medicaid | 1 | 1 |
| Private including HMO | 0.65 (0.53, 0.80) | 0.78 (0.60, 1.01) |
| Self-pay/no charge/other | 0.49 (0.29, 0.85) | 0.56 (0.31, 1.00) |
| Primary tumor site | ||
| Colon | 1 | 1 |
| Rectum | 0.67 (0.52, 0.87) | 0.86 (0.66, 1.14) |
| Extent of liver resection | ||
| Partial hepatectomy | 1 | 1 |
| Hepatic lobectomy | 1.54 (1.24, 1.91) | 1.76 (1.42, 2.19) |
| Comorbidity | ||
| Chronic anemia | 2.98 (2.34, 3.80) | 2.62 (2.04, 3.35) |
| Congestive heart failure | 2.20 (1.32, 3.69) | 1.57 (0.91, 2.68) |
| Hypertension | 1.27 (1.03, 1.57) | 1.10 (0.88, 1.37) |
| Bed size of hospital | ||
| Small | 1 | 1 |
| Medium | 1.43 (1.00, 2.04) | 1.26 (0.85, 1.86) |
| Large | 0.95 (0.69, 1.30) | 0.92 (0.65, 1.30) |
| Teaching status of hospital | ||
| Non-teaching | 1 | 1 |
| Teaching | 0.59 (0.46, 0.76) | 0.75 (0.58, 0.98) |
OR: Odds ratio; aOR: Adjusted OR; CI: Confidence interval. Numbers in bold indicate statistical significance (P < 0.05).