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.