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The 2018 China Health and Retirement Longitudinal Study (CHARLS), which had 7552 participants overall, removed 12,534 individuals due to missing data on stroke, physical activity, and other factors, leaving just 7218 participants. Because they were under 50 years old, 2148 persons were left out of the 8861 group. Finally, the study’s final 5070 participants were included.
