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Predictors of attrition in a longitudinal cognitive aging study: the Maastricht Aging Study (MAAS).

Abstract：

:A large sample of older participants of the Maastricht Aging Study (MAAS) were compared to drop-outs at the 3-year follow-up with respect to socio-demographic, health, and cognitive characteristics. In addition, the impact of selective drop-out on measures of cognitive change was examined. To this end, hypothetical scores were estimated for drop-outs by using single and multiple imputation methods. Of the initial sample of 539 subjects, aged 49 years and older at baseline, 116 (22 %) did not return for the follow-up (n = 32 had died, n = 84 refused participation). Drop-outs who refused to participate in the follow-up were more often women, had lower educational levels, and had lower baseline scores on neurocognitive tests. Follow-up drop-outs who had died were more often men, older, and had a poorer performance on cognitive tests than the follow-up participants. Although follow-up participants and drop-outs differed in terms of socio-demographic and cognitive characteristics, attrition appeared to have little effect on the estimates of cognitive change.

journal_name

J Clin Epidemiol

journal_title

Journal of clinical epidemiology

authors

Van Beijsterveldt CE,van Boxtel MP,Bosma H,Houx PJ,Buntinx F,Jolles J

doi

10.1016/s0895-4356(01)00473-5

subject

Has Abstract

pub_date

2002-03-01 00:00:00

pages

216-23

issue

3

eissn

0895-4356

issn

1878-5921

pii

S0895435601004735

journal_volume

55

pub_type

杂志文章

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