Table 2.

Comparison of Intraoperative and Postoperative Outcomes Between the Historical and Intervention Cohorts.

Outcome	Full unadjusted cohorts			Propensity-matched cohorts
	Historical (N=184)	Intervention (N=89)	p-value*	Historical (N=80)	Intervention (N=80)	p-value*
Intraoperative transfusion rate	70 (38.0%)	14 (15.7%)	<0.001	28 (35.0%)	12 (15.0%)	0.004
Postoperative transfusion rate	16 (8.7%)	4 (4.5%)	0.21	3 (3.8%)	3 (3.8%)	1.00
Perioperative transfusion rate	76 (41.3%)	16 (18.0%)	<0.001	29 (36.2%)	13 (16.2%)	0.004
Estimated blood loss (mL), Median (IQR)	500 (250, 800)	300 (200, 600)	0.009	450 (250, 750)	300 (200, 500)	0.021
Operative time (min), Mean (SD)	279.3 (118.6)	241.7 (105.6)	0.01	264.6 (116.4)	234.4 (105.9)	0.09
Length of stay (days), Median (IQR)	4 (3, 6)	4 (3, 6)	0.87	4 (3, 6)	4 (3, 6)	0.66
Postoperative complications within 30 days
Venous thromboembolism	3 (1.6%)	1 (1.1%)	1.00	1 (1.2%)	1 (1.2%)	1.00
Readmission	23 (12.5%)	1 (1.1%)	0.002	6 (7.5%)	1 (1.2%)	0.12
Reoperation	8 (4.3%)	0	0.057	2 (2.5%)	0	0.50
Infection - Pulmonary	6 (3.3%)	2 (2.2%)	1.00	3 (3.8%)	1 (1.2%)	0.62
Infection - Sepsis	8 (4.3%)	0	0.057	1 (1.2%)	0	1.00
Infection – Wound or pelvic abscess	11 (6.0%)	4 (4.5%)	0.78	2 (2.5%)	4 (5.0%)	0.68
Unplanned Intensive Care Unit admit	6 (3.3%)	0	0.18	3 (3.8%)	0	0.25
Other†	3 (1.6%)	0	0.55	1 (1.2%)	0	1.00

Abbreviations: IQR, interquartile range; SD, standard deviation.

^*Comparisons between groups were evaluated using the chi-square or Fisher’s exact test for nominal variables, the two-sample t-t-est for operative time, and the Wilcoxon rank sum test for estimated blood less and length of stay.

^†Three patients in the historical cohort had a postop anastomosis leak (n=1), postop perforation and anastomosis leak (n=1), and a small bowel obstruction (n=1), respectively.