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Benefits of Linkage to the National Death Index in the Longitudinal Study of Aging

Benefits of Linkage to the National Death Index in the Longitudinal Study of Aging To reduce the potential bias resulting from differential loss to follow-up in the Longitudinal Study of Aging (LSOA), information obtained from household contact methods was supplemented with information from the National Death Index (NDI). This article examines the degree of agreement in the vital status data from two sources (reinterview contacts and the NDI system) and evaluates the potential gains of using the NDI data as a supplement to define participants' vital status. Results reveal that NDI information, used to supplement reinterview information, can substantially reduce bias due to the differential loss of participants to follow-up. Reliance on reinterview information alone was less likely to capture those deaths occurring in study participants who at the initial contact lived alone, were below the poverty index, were interviewed without use of a proxy, did not supply a phone number, and did not own a home. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Aging and Health SAGE

Benefits of Linkage to the National Death Index in the Longitudinal Study of Aging

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References (15)

Publisher
SAGE
Copyright
Copyright © by SAGE Publications
ISSN
0898-2643
eISSN
1552-6887
DOI
10.1177/089826439700900302
pmid
10182395
Publisher site
See Article on Publisher Site

Abstract

To reduce the potential bias resulting from differential loss to follow-up in the Longitudinal Study of Aging (LSOA), information obtained from household contact methods was supplemented with information from the National Death Index (NDI). This article examines the degree of agreement in the vital status data from two sources (reinterview contacts and the NDI system) and evaluates the potential gains of using the NDI data as a supplement to define participants' vital status. Results reveal that NDI information, used to supplement reinterview information, can substantially reduce bias due to the differential loss of participants to follow-up. Reliance on reinterview information alone was less likely to capture those deaths occurring in study participants who at the initial contact lived alone, were below the poverty index, were interviewed without use of a proxy, did not supply a phone number, and did not own a home.

Journal

Journal of Aging and Health – SAGE

Published: Aug 1, 1997

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