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Table 3 Cox hazard model survival analysis based on clinical and MRI features

From: Magnetic resonance imaging in categorization of ovarian epithelial cancer and survival analysis with focus on apparent diffusion coefficient value: correlation with Ki-67 expression and serum cancer antigen-125 level

  HR P 95% CI
Age 2.46 0.04 1.04 5.84
Type II 0.72 0.64 0.18 1.39
CA-125 level (IU/mL)
 < 35 (Reference)    
 35–200 1.61 0.57 0.30 8.52
 201–500 0.21 0.25 0.01 3.15
 > 500 0.35 0.37 0.04 3.53
Ki-67 expression (%)
 < 50 (Reference)    
 50–75 0.48 0.28 0.12 1.83
  > 75 1.08 0.95 0.10 11.68
FIGO Stage
 I (Reference)    
 II 1.45 0.66 0.27 7.74
 III 6.45 0.03 1.25 33.40
 IV 23.54 0.01 2.18 254.51
Maximum diameter (mm) 0.98 0.95 0.53 1.81
Component
 Mixed (Reference)    
 Cyst 2.48 0.14 0.75 8.24
 Solid 3.69 0.03 1.12 12.15
mean ADC (Log) 2.24 0.25 0.56 8.95
Septa 0.52 0.25 0.17 1.59
High signal on T1WI 0.98 0.96 0.39 2.47
  1. Note: Reference groups: ovarian cancer type I, FIGO stag I, mixed components, absence of septa, and absence of T1WI high signal. Multiple imputation approach was applied