Fig. 2From: Catastrophic health expenditure of cancer patients at the end-of-life: a retrospective observational study in ChinaMonthly health expenditure and out-of-pocket payments through income quintile (N = 792) US$, United States dollars.a Q1 is the poorest and Q5 is the wealthiest.b Based on a currency exchange rate of the 6.6423 yuan to US$1.00 in 2016Back to article page