PC was calculated to quantify the proportional change in TB burden metrics (case numbers and ASR) between 1990 and 2021 using the formula [ 16 – 18 ]: A positive trend was defined when the lower 95% UI bound of PC exceeded zero; a negative trend was inferred if the upper 95% UI bound fell below zero [ 15 ].
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Trend and forecast analysis of the changing disease burden of tuberculosis in China, 1990-2021.
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