Additionally, in the Americas, individuals under 20 years also showed a positive EAPC in incidence, while other regions exhibited a negative trend (Figure 2B ).
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Global Burden of Alopecia Areata and Associated Diseases: A Trend Analysis From 1990 to 2021.
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The sentences
A positive EAPC and its lower bound > 0 indicated an increasing trend, whereas a negative EAPC and its upper bound < 0 suggested a decreasing trend; if neither condition was met, the trend was considered stable.