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. Author manuscript; available in PMC: 2015 Oct 21.
Published in final edited form as: Circulation. 2014 Sep 26;130(17):1445–1451. doi: 10.1161/CIRCULATIONAHA.113.008193

Table 4.

Factors associated with graft-level VGF

Variable Chi-Square OR 95% CI P Value
Without 30-day medications*
    Duration of surgery (per 10-min increase) 27.3 1.04 1.02-1.05 <0.0001
    Endoscopic harvest technique (vs. open) 14.03 1.37 1.16-1.62 <0.001
    Target artery quality (vs. good)
        Fair 9.85 1.31 1.11-1.56 <0.01
        Poor 59.19 2.34 1.89-2.91 <0.0001
    History of cerebrovascular disease 5.82 1.39 1.06-1.81 0.02
Including 30-day medications
    Duration of surgery (per 10-min increase) 25.30 1.03 1.02-1.05 <0.0001
    Endoscopic harvest technique (vs. open) 12.17 1.35 1.14-1.59 <0.001
    Target artery quality (vs. good)
        Fair 9.35 1.31 1.10-1.55 <0.01
        Poor 58.29 2.34 1.88-2.91 <0.0001
    History of cerebrovascular disease 4.92 1.35 1.04-1.77 0.03
    Clopidogrel or ticlopidine use 7.10 1.30 1.07-1.58 <0.01

CI indicates confidence interval; OR, odds ratio.

*

4288 grafts over 1813 patients with non-missing covariates were included in the “without 30-day medications” model, and 4279 grafts over 1808 patients were included in the “30-day medications” model.