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Centre for Policy on Ageing | |
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| Death, dropout and longitudinal measurements of cognitive change in old age | | Author(s) | Patrick Rabbitt, Mary Lunn, Danny Wong |
| Journal title | Journals of Gerontology: Series B, Psychological Sciences and Social Sciences, vol 63B, no 5, September 2008 |
| Pages | pp P271-P278 |
| Source | http://www.geron.org |
| Keywords | Mental ageing ; Cognitive processes ; Longitudinal surveys ; Greater Manchester ; Newcastle upon Tyne. |
| Annotation | During a 20-year longitudinal study of cognitive change in old age in Manchester and Newcastle upon Tyne, 2342 of 5842 participants died and 3204 dropped out. To study cognitive change as death approaches, participants were grouped by survival, death, dropout, or dropout followed by death. Linear mixed-effects pattern-mixture models compared rates of cognitive change before death and dropout from four quadrennial administrations of tests of fluid intelligence, vocabulary, and verbal learning. After taking into account the significant effects of age, gender, demographics and recruitment cohorts, the authors found that approach to death and dropout caused strikingly similar reductions in mean test scores and amounts of practice gains between successive quadrennial testing sessions. Participants who neither dropped out nor died showed significant but slight cognitive declines. These analyses illustrate how neglect or dropout miscalculates effects of death, of worsening health, and of all other factors affecting rates of cognitive change. (RH). |
| Accession Number | CPA-081009212 A |
| Classmark | D6: DA: 3J: 83: 86A |
Data © Centre for Policy on Ageing |
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| ...from the Ageinfo database published by Centre for Policy on Ageing. |
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