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Table 10 Univariate and multivariate analysis of progression-free survival

From: Radical surgery versus standard surgery for primary cytoreduction of bulky stage IIIC and IV ovarian cancer: an observational study

Characteristic N Median PFS Univariate Multivariate
   (months) P value HR (95 %CI) P value
FIGO stage    0.004 1.62 (1.16–2.27) 0.001
 IIIC 305 15.3    
 IV 46 11.4    
Residual disease in upper abdomen    <0.001 1.29 (1.16–1.44) 0.002
 0 cm 75 23.3    
 0–0.5 cm 54 17.8    
 0.5–1 cm 85 13.5    
 >1 cm 137 12.6    
Total 351 14.7    
  1. Abbreviations: N number of patients, FIGO International Federation of Gynecology and Obstetrics, PFS progression-free survival, HR hazard ratio, 95 % CI 95 % confidence interval