Selection of elderly controls using random digit dialing

G.W. Olsen and J.S. Mandel

American Journal of Public Health, 1988, vol. 78, issue 11, 1487-1488

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.

Date: 1988
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Persistent link: https://EconPapers.repec.org/RePEc:aph:ajpbhl:1988:78:11:1487-1488_7

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