Fig. 4

Tornado diagram of single factor sensitivity analysis of the Markov model in China (A) and in the United States (B). X-axis Incremental cost-effectiveness ratio (ICER), measured in RMB/QALY for China and USD/QALY for the United States. Y-axis Parameters being analyzed (e.g., drug cost, utility values, transition probabilities). Bars: The length of each bar represents the range of ICER values when the parameter is varied. The longer the bar, the greater the impact of that parameter on the results