Predictive value of extracellular volume fraction determined using enhanced computed tomography for pathological grading of clear cell renal cell carcinoma: a preliminary study

Table 4 Multifactorial binary logistic Stepwise forward regression analysis of CT quantitative parameters for preoperative prediction of CcRCC stage

CT parameters	Coefficient	SE	Wald	P	OR	95%CI
Long diameter	-0.016	0.041	0.158	0.691	0.984	0.909 ~ 1.066
CT value of MP	-0.055	0.128	0.183	0.668	0.947	0.737 ~ 1.216
CT value of NP	0.056	0.038	2.141	0.143	1.057	0.981 ~ 1.139
CT value of DP	0.019	0.172	0.012	0.911	1.019	0.728 ~ 1.427
ΔS1	0.072	0.131	0.305	0.581	1.075	0.731 ~ 1.390
ΔS3	-0.040	0.190	0.045	0.832	0.961	0.662 ~ 1.394
ECV (%)	0.669	0.317	4.459	0.035*	1.952	1.049 ~ 3.633

Notes: * p < 0.05. CT, computed tomography; H MP, corticomedullary phase, NP, nephrographic phase; DP, delay phase; ECV, extracellular volume. SE standard error; OR odds ratio; CI: confidence interval

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