If the EAPC estimation and its 95% CIs were both > 0 (or both < 0), HBV prevalence was indicated to be in an increasing trend (or a decreasing trend) in the given time interval.
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Economic-related inequalities in hepatitis B virus infection among 115.8 million pregnant women in China from 2013 to 2020.
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The sentences
The concentration index showed a trend of fluctuating decline, indicating that economic-related inequalities in HBsAg prevalence were narrowing.