Use caution in interpreting results, commentators warn
Lack of knowledge about ovarian cancer prevents many women from seeking medical attention, which delays diagnosis and treatment and may prove increasingly dangerous as incidence rises by an expected 55% over the next 2 decades, according to the World Ovarian Cancer Coalition.
Data from the coalition’s 2018 survey of women with ovarian cancer show that 18% had never heard of the disease before their diagnosis and 51% had heard of it but did not know anything about it. The Every Women Study survey, completed by 1,531 women in 44 countries, also reveals that nine out of ten had experienced symptoms prior to diagnosis but fewer than half saw a physician within a month of noticing those symptoms, the coalition said.
“This study, for the first time, provides powerful evidence of the challenges faced by women diagnosed with ovarian cancer across the world and sets an agenda for global change. We were especially shocked by the widespread, woeful lack of awareness of ovarian cancer,” Annwen Jones, coalition vice-chair and cochair of the study, said in a separate written statement.
Results varied considerably by country, and only 10 countries provided enough responses to allow comparisons: Australia (120), Brazil (52), Canada (167), Germany (141), Hungary (58), Italy (92), Japan (250), Spain (70), the United Kingdom (176), and the United States (248).
Among those comparisons, women in Germany (5.5 weeks) and Spain (7.9 weeks) were the first to visit a physician after first experiencing symptoms, while those in Italy (15.2 weeks) and the United States (12.9 weeks) were last. The United States was also longest in time from first visit to diagnosis (23.6 weeks), and Japan was the shortest (11 weeks). Despite that world-longest time to diagnosis, however, over 69% of U.S. women said that their care around the time of diagnosis was very good, which was higher than any other country, the coalition reported.
Surgery statistics were closer among countries, with an average of 94% of all women undergoing surgery to treat their ovarian cancer. The United States, at 98.3%, was second to Spain’s 98.5%, and Hungary was the largest outlier on the low side at 59%. Over 87% of all women reported having chemotherapy to treat or control their cancer, and 9.8% of women said that they had received intraperitoneal chemotherapy. In the United States, 22.5% of women received intraperitoneal therapy, compared with 0.7% for the United Kingdom.
“No one country has all the answers, and whilst there is still an urgent need for a step-change in the level of investment in research for better treatments and tools for early diagnosis, there are significant opportunities to improve survival and quality of life for women in the immediate and short term to make a series of marginal gains if these variations are addressed by individual countries,” the coalition said in the report.