A decomposition analysis of the factors contributing to the increase in cataract cases in the Chinese population from 1990 to 2021.

The "decomposition analysis" R code conducts a decomposition analysis of the increase in cataract cases in the Chinese population from 1990 to 2021. By adjusting the relevant parameters, the analysis can be performed separately for different genders. The Excel file <b>"population data"</b> contains raw data for the <b>"population"</b> dataframe in the R code, while <b>"Age-specific prevalence rates"</b> provides raw data for the <b>"cataract_data"</b> dataframe.