The WHO reports the medication adherence rate only approaches 50%, even in developed nations. When compared to the top 15 most adherent countries on Medisafe, the U.S. healthcare system has some work to do in boosting its oncology adherence rate. It’s important for pharma companies to know which countries are leading the charge and which types of cancer are seeing the lowest adherence. What types of factors influence oncology drug adherence rates? How do rates vary by day and time? Condition? Number of medications taken simultaneously? Which pharma companies manufacture the top 10 most adherent cancer drugs on Medisafe.