MKI67 and cervical small cell carcinoma: However, in the multivariate analysis, apart from TNM stage and adjuvant therapy, Ki-67 index (Hazard Ratio (HR) = 0.314, 95% CI: 0.127–0.774; P = 0.012, Figure 2) was also found to be an independent prognostic factor of patients with SCCE (Table 3).