Selection of elderly controls using random digit dialing.
- 1 November 1988
- journal article
- research article
- Published by American Public Health Association in American Journal of Public Health
- Vol. 78 (11) , 1487-1488
- https://doi.org/10.2105/ajph.78.11.1487
Abstract
The experience of identifying and soliciting elderly male controls, using a nonclustered random digit dialing procedure in a case-control study, is presented. For elderly controls (ages 65-84) 3.5 times more residential telephone numbers were required than for controls encompassing a much broader age range (ages 40-84). This is a function of the proportion of elderly in the population and their lower response to telephone identification. Elderly controls, age 70 and older, also had lower participation rates.This publication has 13 references indexed in Scilit:
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