Epidemiology and socioeconomic features of appendicitis in Taiwan: a 12-year population-based study.

Contrary to the declining trends, other studies have also reported an increasing trend for the incidence of appendicitis [ 6 , 31 , 8 ] and a constant incidence of appendicitis [ 8 , 32 ].

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The incidences of appendicitis, acute appendicitis, and primary appendectomy decreased annually, whereas the incidence of perforated appendicitis did not exhibit a clear trend.

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