Table 3.

Summary of randomized controlled trials evaluating cancer recurrence in patients who underwent colon cancer surgery with or without perioperative transfusions. CI, confidence interval

Year	First author	Sample size	Odds ratio	[95% CI]	Outcome
1985	Frankish	174	1.02	[0.5, 2.06]	Recurrence in 24% of both transfused and non-transfused patients
1990	Cheslyn-Curtis	961	1.16	[0.88, 1.52]	Local recurrence or distal metastasis in 33 vs 36% of transfused and non-transfused patients, respectively
1990	Harder	266	1.7	[0.93, 3.10]	Recurrence in 40 vs 28% of transfused and non-transfused patients, respectively
1992	Tartter	339	2.39	[1.46, 3.91]	Recurrence in 40 vs 21% of transfused and non-transfused patients, respectively
1994	Heiss	100	2.1	[0.83, 5.32]	Recurrence in 33 vs 19% of transfused and non-transfused patients, respectively
1994	Houbiers	697	1.23	[0.87, 174]	Recurrence in 30 vs 26% of transfused and non-transfused patients, respectively
1995	Busch	420	1.9	[1.22, 296]	Recurrence in 41 vs 27% of transfused and non-transfused patients, respectively