Abbreviation: HR, hazard ratio; CI, confidence interval; NE, not estimable. aP values for age at diagnosis, CA125 and HER2 amplification ratio were based on Wald test, and P values for all other varia
*95%-CI = 95% confidence interval; **p-values are results of log rank tests excluding cases with missing values; log rank test excluding cases without lymph node metastasis and those with missing val
