MKI67 and esophageal squamous cell carcinoma: The results showed that ICVP(odds ratio [OR]: 2.278; 95% confidence interval [CI]: 1.114–5.648) and WCAP(OR: 0.375; 95% CI: 0.147–0.775) were independent predictors of high Ki−67 expression in ESCC.​ The model constructed was as follow: Logit (P) = 1.215 + 0.823×ICVP−0.981×WCAP.