Electronic telephone directory listings: Preferred sampling frame for a population-based study of childhood cancer in Australia

Valery, P. C., Williams, G., McWhirter, W., Sleigh, A., Scott, D. and Bain, C. (2000) Electronic telephone directory listings: Preferred sampling frame for a population-based study of childhood cancer in Australia. Annals of Epidemiology, 10 8: 504-508. doi:10.1016/S1047-2797(00)00070-3


Author Valery, P. C.
Williams, G.
McWhirter, W.
Sleigh, A.
Scott, D.
Bain, C.
Title Electronic telephone directory listings: Preferred sampling frame for a population-based study of childhood cancer in Australia
Journal name Annals of Epidemiology   Check publisher's open access policy
ISSN 1047-2797
Publication date 2000
Sub-type Article (original research)
DOI 10.1016/S1047-2797(00)00070-3
Volume 10
Issue 8
Start page 504
End page 508
Total pages 5
Editor Dr Albert Oberman
Place of publication New York
Publisher Elsevier Science
Collection year 2000
Language eng
Subject C3
321202 Epidemiology
730108 Cancer and related disorders
Abstract PURPOSE: We report our telephone-based system for selecting community control series appropriate for a complete Australia-wide series of Ewing's sarcoma cases. METHODS: We used electronic directory random sampling to select age-matched controls. The sampling has all listed telephone numbers on an up dated CD Rom. RESULTS: 95% of 2245 telephone numbers selected were successfully contacted. The mean number of attempts needed was 1.94, 58% answering at the first attempt. On average, we needed 4.5 contacts per control selected. Calls were more likely to be successful (reach a respondent) when made in the evening (except Saturdays). The overall response rate among contacted telephone numbers was 92.8%. Participation rates among female and male respondents were practically the same. The exclusion of unlisted numbers (13.5% of connected households) and unconnected households (3.7%) led to potential selection bias. However, restricting the case series to listed cases only, plus having external information on the direction of potential bias allow meaningful interpretation of our data. CONCLUSION: Sampling from an electronic directory is convenient, economical and simple, and gives a very good yield of eligible subjects compared to other methods. (C) 2000 Elsevier Science Inc. All rights reserved.
Keyword Public, Environmental & Occupational Health
Telephone
Control Selection
Sampling
Case-control Study
Australia
Silent Numbers
Selection
Q-Index Code C3

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Public Health Publications
 
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Created: Tue, 10 Jun 2008, 11:13:14 EST