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Table 1: Univariate and multivariate analyses for the effects of selected factors on pre-/postcontrast SSI, overall and for propofol subjects
Overall Propofol
Univariate Multivariate^{^a} Univariate Multivariate^{^a}
R^{^b} P OR (95% CI) P R^{^b} P OR (95% CI) P
Precontrast SSI
    FiO₂ 0.442 .003 −0.418 .042 
    Age −0.372 .015 0.523 .009 1.661 (0.954–2.893) .073
    GM CBF 0.036 .864 0.274 .364 
    GM CBV 0.671 .0002 4.127 (1.688–10.089) .002 0.612 .026 3.964 (1.118–14.054) .033
    GM MTT 0.461 .020 3.769 (1.231–11.537) .020 0.331 .269 
Postcontrast SSI
    FiO₂ 0.453 .003 – .022 −0.357 .087 
    Age −0.374 .015 0.600 .002 1.658 (0.982–2.8) .058
    GM CBF 0.062 .770 0.180 .557 
    GM CBV 0.625 .0008 2.613 (1.225–5.575) .013 0.376 .205 
    GM MTT 0.368 .071 0.199 .516 
↵a Multivariate analysis by stepwise ordinal logistic regression.
↵b Spearman correlation coefficient.