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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 3.

Factors associated with patient-level VGF

Variable Chi-Square OR 95% CI P Value
Without 30-day medications*
    Duration of surgery (per 10-min increase) 34.66 1.05 1.03-1.07 <0.0001
    Endoscopic harvest technique (vs. open) 14.07 1.44 1.19-1.75 <0.0001
    Worst target artery quality (vs. good)
        Fair 3.72 1.24 1.00-1.53 0.05
        Poor 8.35 1.45 1.13-1.87 <0.01
Including 30-day medications
    Duration of surgery (per 10-min increase) 32.51 1.05 1.03-1.07 <0.0001
    Endoscopic harvest technique (vs. open) 12.16 1.41 1.16-1.71 <0.001
    Worst target artery quality (vs. good)
        Fair 3.13 1.22 0.98-1.51 0.08
        Poor 7.55 1.43 1.11-1.84 <0.01
    Clopidogrel or ticlopidine use 6.62 1.35 1.07-1.69 0.01

CI indicates confidence interval; OR, odds ratio.

*

1817 patients with non-missing covariates were included in the “without 30-day medications” model, and 1812 patients were included in the “30-day medications” model.