The Effect of Altering ADL Thresholds on Active Life Expectancy Estimates for Older Persons
Objectives. Research on disability and active life expectancy (ALE) has often criticized the measurement of disability but has rarely empirically investigated the effect of changing measurement. The purpose of this study was to determine whether altering the number of activities of daily living (ADL...
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| Veröffentlicht in: | The journals of gerontology. Series B, Psychological sciences and social sciences Psychological sciences and social sciences, 2003-05, Vol.58 (3), p.S171-S178 |
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| container_title | The journals of gerontology. Series B, Psychological sciences and social sciences |
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| creator | Lynch, Scott M. Brown, J. Scott Harmsen, Katherine G. |
| description | Objectives. Research on disability and active life expectancy (ALE) has often criticized the measurement of disability but has rarely empirically investigated the effect of changing measurement. The purpose of this study was to determine whether altering the number of activities of daily living (ADLs) required to consider an individual “disabled” affects population-based ALE estimates after considering parametric uncertainty and sampling error. Methods. The authors develop a Bayesian approach to estimating multistate life tables for a three-dimensional state space, using data on community-dwelling older adults from the 1989 and 1994 National Long Term Care Survey analytic files. Empirical confidence intervals for ALE are compared across 6 models using successively higher ADL cutoffs for defining individuals as being disabled. Results. After considering sampling and other errors in the estimation of transition probabilities, the authors found that altering the threshold for measuring disability has relatively little effect on ALE estimates, especially with higher ADL-level thresholds and at older ages. Discussion. The implications of the results include that disability measurement, including altering the definition of being disabled and possibly expanding the state space of a model, may not affect population-based estimates of ALE. |
| doi_str_mv | 10.1093/geronb/58.3.S171 |
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Scott ; Harmsen, Katherine G.</creator><creatorcontrib>Lynch, Scott M. ; Brown, J. Scott ; Harmsen, Katherine G.</creatorcontrib><description>Objectives. Research on disability and active life expectancy (ALE) has often criticized the measurement of disability but has rarely empirically investigated the effect of changing measurement. The purpose of this study was to determine whether altering the number of activities of daily living (ADLs) required to consider an individual “disabled” affects population-based ALE estimates after considering parametric uncertainty and sampling error. Methods. The authors develop a Bayesian approach to estimating multistate life tables for a three-dimensional state space, using data on community-dwelling older adults from the 1989 and 1994 National Long Term Care Survey analytic files. Empirical confidence intervals for ALE are compared across 6 models using successively higher ADL cutoffs for defining individuals as being disabled. Results. After considering sampling and other errors in the estimation of transition probabilities, the authors found that altering the threshold for measuring disability has relatively little effect on ALE estimates, especially with higher ADL-level thresholds and at older ages. Discussion. The implications of the results include that disability measurement, including altering the definition of being disabled and possibly expanding the state space of a model, may not affect population-based estimates of ALE.</description><identifier>ISSN: 1079-5014</identifier><identifier>EISSN: 1758-5368</identifier><identifier>DOI: 10.1093/geronb/58.3.S171</identifier><identifier>PMID: 12730318</identifier><identifier>CODEN: JGBSF3</identifier><language>eng</language><publisher>Washington, DC: Oxford University Press</publisher><subject>Activities of Daily Living ; Activities of Daily Living - classification ; Adult. Elderly ; Aged ; Aged, 80 and over ; Bayes Theorem ; Biological and medical sciences ; Confidence Intervals ; Developmental psychology ; Disability Evaluation ; Elderly ; Female ; Fundamental and applied biological sciences. Psychology ; Handicapped ; Health Surveys ; Humans ; Life Expectancy ; Life Tables ; Lifestyles ; Long-Term Care - statistics & numerical data ; Longevity ; Male ; Older people ; Psychology. Psychoanalysis. Psychiatry ; Psychology. Psychophysiology ; Sampling Studies ; United States</subject><ispartof>The journals of gerontology. 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Scott</creatorcontrib><creatorcontrib>Harmsen, Katherine G.</creatorcontrib><title>The Effect of Altering ADL Thresholds on Active Life Expectancy Estimates for Older Persons</title><title>The journals of gerontology. Series B, Psychological sciences and social sciences</title><addtitle>J Gerontol B Psychol Sci Soc Sci</addtitle><description>Objectives. Research on disability and active life expectancy (ALE) has often criticized the measurement of disability but has rarely empirically investigated the effect of changing measurement. The purpose of this study was to determine whether altering the number of activities of daily living (ADLs) required to consider an individual “disabled” affects population-based ALE estimates after considering parametric uncertainty and sampling error. Methods. The authors develop a Bayesian approach to estimating multistate life tables for a three-dimensional state space, using data on community-dwelling older adults from the 1989 and 1994 National Long Term Care Survey analytic files. Empirical confidence intervals for ALE are compared across 6 models using successively higher ADL cutoffs for defining individuals as being disabled. Results. After considering sampling and other errors in the estimation of transition probabilities, the authors found that altering the threshold for measuring disability has relatively little effect on ALE estimates, especially with higher ADL-level thresholds and at older ages. Discussion. The implications of the results include that disability measurement, including altering the definition of being disabled and possibly expanding the state space of a model, may not affect population-based estimates of ALE.</description><subject>Activities of Daily Living</subject><subject>Activities of Daily Living - classification</subject><subject>Adult. Elderly</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Bayes Theorem</subject><subject>Biological and medical sciences</subject><subject>Confidence Intervals</subject><subject>Developmental psychology</subject><subject>Disability Evaluation</subject><subject>Elderly</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Handicapped</subject><subject>Health Surveys</subject><subject>Humans</subject><subject>Life Expectancy</subject><subject>Life Tables</subject><subject>Lifestyles</subject><subject>Long-Term Care - statistics & numerical data</subject><subject>Longevity</subject><subject>Male</subject><subject>Older people</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychology. Psychophysiology</subject><subject>Sampling Studies</subject><subject>United States</subject><issn>1079-5014</issn><issn>1758-5368</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>X2L</sourceid><sourceid>7QJ</sourceid><sourceid>BHHNA</sourceid><recordid>eNqFkd-L1DAQx4so3g9990mC4L11L2mSJnlcztUVCye6gpwPIW0mtz27TU26x-1_b5aWO_DFwGQC-Xxnkvlm2RuCFwQrenkLwff1JZcLuvhOBHmWnRLBZc5pKZ-nMxYq55iwk-wsxjucFhHsZXZCCkExJfI0-7XZAlo5B82IvEPLboTQ9rdo-aFCm22AuPWdjcj3aNmM7T2gqnVJ8DAkgembA1rFsd2ZESJyPqDrzkJAXyFE38dX2Qtnugiv53ye_fi42lyt8-r60-erZZU3jAmSOyZt3RgrG5Bc1U4U1FKjjBMcOwKsFpY1xFjHrMPcWk5A2RJkSQXliip6nl1MdYfg_-whjnrXxga6zvTg91ELWjDBmfgvWGKmSiqLBL77B7zz-9CnT-iCYKwUUSRBeIKa4GMM4PQQ0ijCQROsj_boyR7Npab6aE-SVJMkQBrgI-_3w4zea2qOuDmkKDCmKbUpjnlIEVMVnTapt-MulXs7P3Nf78A-9Z_tTcD7GTCxMZ0LybI2PnFMKCpImbh84to4wsPjvQm_dSmo4Hr980bzm_WXoloT_Y3-BSsrwgM</recordid><startdate>200305</startdate><enddate>200305</enddate><creator>Lynch, Scott M.</creator><creator>Brown, J. Scott</creator><creator>Harmsen, Katherine G.</creator><general>Oxford University Press</general><general>Gerontological Society of America</general><general>Oxford University Press for Gerontological Society of America</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>DKI</scope><scope>X2L</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QJ</scope><scope>K9.</scope><scope>NAPCQ</scope><scope>7U4</scope><scope>BHHNA</scope><scope>DWI</scope><scope>WZK</scope><scope>7X8</scope></search><sort><creationdate>200305</creationdate><title>The Effect of Altering ADL Thresholds on Active Life Expectancy Estimates for Older Persons</title><author>Lynch, Scott M. ; Brown, J. Scott ; Harmsen, Katherine G.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4471-f48dbcad8ce859bf723d3a9af750f1e4b7d4c1adf4df05dd51e9d6e8637359393</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Activities of Daily Living</topic><topic>Activities of Daily Living - classification</topic><topic>Adult. Elderly</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Bayes Theorem</topic><topic>Biological and medical sciences</topic><topic>Confidence Intervals</topic><topic>Developmental psychology</topic><topic>Disability Evaluation</topic><topic>Elderly</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Handicapped</topic><topic>Health Surveys</topic><topic>Humans</topic><topic>Life Expectancy</topic><topic>Life Tables</topic><topic>Lifestyles</topic><topic>Long-Term Care - statistics & numerical data</topic><topic>Longevity</topic><topic>Male</topic><topic>Older people</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. Psychophysiology</topic><topic>Sampling Studies</topic><topic>United States</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lynch, Scott M.</creatorcontrib><creatorcontrib>Brown, J. 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Series B, Psychological sciences and social sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lynch, Scott M.</au><au>Brown, J. Scott</au><au>Harmsen, Katherine G.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Effect of Altering ADL Thresholds on Active Life Expectancy Estimates for Older Persons</atitle><jtitle>The journals of gerontology. Series B, Psychological sciences and social sciences</jtitle><addtitle>J Gerontol B Psychol Sci Soc Sci</addtitle><date>2003-05</date><risdate>2003</risdate><volume>58</volume><issue>3</issue><spage>S171</spage><epage>S178</epage><pages>S171-S178</pages><issn>1079-5014</issn><eissn>1758-5368</eissn><coden>JGBSF3</coden><abstract>Objectives. Research on disability and active life expectancy (ALE) has often criticized the measurement of disability but has rarely empirically investigated the effect of changing measurement. The purpose of this study was to determine whether altering the number of activities of daily living (ADLs) required to consider an individual “disabled” affects population-based ALE estimates after considering parametric uncertainty and sampling error. Methods. The authors develop a Bayesian approach to estimating multistate life tables for a three-dimensional state space, using data on community-dwelling older adults from the 1989 and 1994 National Long Term Care Survey analytic files. Empirical confidence intervals for ALE are compared across 6 models using successively higher ADL cutoffs for defining individuals as being disabled. Results. After considering sampling and other errors in the estimation of transition probabilities, the authors found that altering the threshold for measuring disability has relatively little effect on ALE estimates, especially with higher ADL-level thresholds and at older ages. Discussion. 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| subjects | Activities of Daily Living Activities of Daily Living - classification Adult. Elderly Aged Aged, 80 and over Bayes Theorem Biological and medical sciences Confidence Intervals Developmental psychology Disability Evaluation Elderly Female Fundamental and applied biological sciences. Psychology Handicapped Health Surveys Humans Life Expectancy Life Tables Lifestyles Long-Term Care - statistics & numerical data Longevity Male Older people Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Sampling Studies United States |
| title | The Effect of Altering ADL Thresholds on Active Life Expectancy Estimates for Older Persons |
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