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Missing DataNumber of Chronic DiseasesSelectivity BiasAssociated EffectsCognitive VariablesAnthropometric DataInternational MigrationSocial VulnerabilityDemographic CharacteristicsOlder PopulationCHRONIC CONDITIONSSource of InformationPolicy ImplicationsRegression ModelCOHORT STUDIESCauses of DeathHealth PolicyLegal StatusBody Mass IndexHealth Care