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AJPH First Look, published online ahead of print Sep 17, 2008
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AJPH.2008.145151v1
98/11/1930-a    most recent
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November 2008, Vol 98, No. 11 | American Journal of Public Health 1930-1931
© 2008 American Public Health Association
DOI: 10.2105/AJPH.2008.145151

LETTERS

BÉHAGUE AND STORENG RESPOND

Dominique P. Béhague, PhD and Katerini T. Storeng, MSc

Dominique P. Béhague is with the London School of Hygiene and Tropical Medicine, London, England. Katerini T. Storeng is a research degree student at the London School of Hygiene and Tropical Medicine, London.

Correspondence: Requests for reprints should be sent to Dominique P. Béhague, London School of Hygiene and Tropical Medicine, Keppel Street, London WC1E 7HT, UK (e-mail: dominique.behague@lshtm.ac.uk).

Because this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

Thank you for the opportunity to respond to Yeh and Brandes’s letter regarding our article.1 We are encouraged by their interest and will address their three points below.

First, Yeh and Brandes are concerned that our use of opportunistic or purposive sampling, being nonsystematic and nonprobabilistic, has biased our results. However, for certain types of research questions, purposive sampling generates data of higher quality, validity, and pertinence than does systematic sampling.2 This is particularly the case when studying socially complex phenomena and when seeking to explore the views of specific types of informants. Additionally, unlike sampling from a known population . . . [Full Text]






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