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. Author manuscript; available in PMC: 2017 Feb 5.
Published in final edited form as: J Am Coll Surg. 2013 Mar 25;216(5):1005–1033. doi: 10.1016/j.jamcollsurg.2013.01.006

Table 2.

Postoperative Morbidity, Mortality, and Bypass Graft Patency in Study Cohort with p Values of the Study Cohort and Group Frequency Matched Cohort

0 U (n = 1,532) 1 to 2 U (n = 248) 3+ U (n = 100) p Value study cohort p Value matched cohort
n % n % n %
Mortality   26   1.7   6 2.4   7   7   0.002   0.125
Wound infection   73   4.8 16 6.5 14 14   0.0004   0.0008
Graft infection     2   0.1   0   0   3   3 <0.0001 <0.0001
MI   60   3.9 21 8.5 20 20 <0.0001 <0.0001
Dysrhythmia   59   3.9 21 8.5 16 16 <0.0001   0.001
Reoperation 193 12.6 46 18.5 38 38 <0.0001 <0.0001
Loss of primary patency   69   4.5 19 7.7 15 15.3 <0.0001   0.0003