Impact of perioperative transfusion in patients undergoing resection of colorectal cancer liver metastases: A population-based study

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).