However, the global APC of ASIR and ASPR had an increasing trend from 1991–2009 and a decreasing trend from 2009–2021.
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Analysis and comparison of the trends in burden of malignant cutaneous melanoma in East Asian countries and regions and worldwide from 1991 to 2021.
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The ASDR of China, South Korea, and Global MM showed an overall decreasing trend from 1991–2021, North Korea was a slightly increasing trend, while Japan and Taiwan province were more fluctuating ( Figure 5 ).
Let us take China as an example, the annual rate of change (APC) of ASIR is in an increasing trend from 1991–2021, and there is a rapidly increasing trend after 2004 that lasts until 2012 (1991–1994 APC = 2.41; 1994–2004 APC = 0.44; 2004–2012 APC = 4.44; 2012–2016 APC = 1.65; 2016–2019 APC = 2.61; 2019–2021 APC = 1.54; p < 0.05).