Document Classification

Section Type: RESULTS

Text: The adjusted risk for first event was statistically significantly lower in the systematic lymphadenectomy arm (hazard ratio [HR] =. 75, 95 % confidence interval [CI] = 0. 59 to 0. 94 ; P =. 01) than in the no-lymphadenectomy arm, corresponding to 5-year progression-free survival rates of 31. 2 and 21. 6 % in the systematic lymphadenectomy and control arms, respectively (difference = 9. 6 %, 95 % CI = 1. 5 % to 21. 6 %), and to median progression-free survival of 29. 4 and 22. 4 months, respectively (difference = 7 months, 95 % CI = 1. 0 to 14. 4 months).