Fig. 2

Time and temporal trend of ovarian cancer histology with age. Lines are estimated values for modeling, and points represent actual data. a The annual percentage of each histological subtype among the four major primary epithelial ovarian cancers is shown. b-d At diagnosis, the four histological subtypes of epithelial ovarian cancer were stratified by age. c < 50 years old; (D) ≥ 50 years old