Research article summary (published 30 Aug 2009):

Validity of random-digit-dialing in recruiting controls in a case-control study.

Full Abstract

OBJECTIVES: To evaluate whether the participating controls represented the underlying population in a colorectal cancer case-control study in a geographically isolated North American population. METHODS: The characteristics of the study controls recruited through Random-digit-dialing (RDD) were compared with those in the corresponding target population estimates. RESULTS: Participating controls were more likely to have higher levels of education and income and were less likely to be smokers. CONCLUSION: Study controls recruited through RDD tend to have higher socioeconomic status, which may lead to overestimation of a number of risk factors in this study.

Author information

Author/s: Wang, Peizhong Peter (PP); Dicks, Elizabeth (E); Gong, Xianying (X); Buehler, Sharon (S); Zhao, Jinhui (J); Squires, Josh (J); Younghusband, Banfield (B); McLaughlin, John R (JR); Parfrey, Patrick S (PS);

Affiliation: Division of Community Health and Humanities, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, Canada. pwang(-atsign-)mun.ca

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't; Validation Studies

Journal: American journal of health behavior (Am J Health Behav), published in United States. (Language: eng)

Reference: -2009 Sep-Oct; vol 33 (issue 5) : pp 513-20

Dates: Created 2009/03/19; Completed 2009/09/03;

PMID: 19296741, status: MEDLINE (last retrieval date: 9/4/2009, IMS Date: )

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

External Links for this article
(including full text providers, if available):

Click Electronic Full-text Provider Links to see options for finding the electronic full text links to this article. Note there may be a subscription or fee required for access to the full text. See our FAQ for information on finding FREE full text articles.

This article may also be located in paper journal collections available in many libraries. Use the Journal and Publication Information above to find the full article.

MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Adult Aged Bias (Epidemiology) Case-Control Studies Educational Status Female Humans Male

Male Middle Aged Newfoundland and Labrador Patient Selection Risk Factors Smoking Social Class Telephone

Related articles

These are the highest related articles currently in the database:

• Recruitment bias resulted in poorer overall health status in a community-based control group. 10 May 2008
• A way to select on clinical grounds patients with high risk for pulmonary embolism: a retrospective analysis in a nested case-control study. 30 Dec 1994
• Alternative strategies for selecting population controls: comparison of random digit dialing and targeted telephone calls. 30 Dec 1999
• Characteristics of telephone survey respondents according to willingness to participate. 30 Dec 2002
• Plasma selenium levels and the risk of colorectal adenomas. 30 Dec 1996
• Coronary artery bypass grafting without cardiopulmonary bypass--an attractive alternative in high risk patients. 29 Apr 1997
• Re: "studies with low response proportions may be less biased than studies with high response proportions". 13 Feb 2005
• Cerebrovascular reactivity in carotid artery occlusion: possible implications for surgical management of selected groups of patients. 27 Feb 1999
• The effect of presentation level and compression characteristics on sentence recognition in modulated noise. 29 Apr 2004
• The reuse of subjects in clinical studies: is a bias introduced? Is there a threat to study validity? 30 Dec 2003

See 100+ related articles.

Related Article Map

Legend: - FREE Full text Article. - Abstract only. - Title only. More help.

See a large map of 100+ related articles.