Conversely, if the upper limit of the 95% CI of the EAPC estimate was less than 0, a decreasing trend was recognized.
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The burden and trends of headache disorders among the population aged 15–39: a study from 1990 to 2019
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The sentences
If the lower limit of the 95% CI for the EAPC estimate was greater than 0, an increasing trend in ASRs during the observation period was considered.