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As shown previously, complete case analysis is not a valid method to handle missing data in nonrandomized studies if data are missing at random. 3 In this situation, multiple imputation is the ...
The data refresh primarily includes new country-level data for 43 countries for the 2022 reference year, for SDG 9.5 indicators (SDG 9.5.1: Research and development expenditure as a proportion of GDP; ...
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