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Fam Pract. 1995 Dec;12(4):474-5.

Critical factors in the determination of focus group size.

Author information

1
South Eastern Sydney Area Health Service, Sutherland Hospital, New South Wales, Australia.

Abstract

From a theoretical perspective, it is difficult to decide an optimal number of participants that should be included in a focus group. Despite recent attempts, critical factors for the determination of the size of a focus group remain uncertain and can further be elaborated. From a practical perspective, this paper proposes four other factors that can be used for the determination of focus group size. These are: the number of questions asked, the allotted time for each question, the format of the focus group session and the duration of the session. Above all, the size of a group should first be determined by the aims of the research study.

PMID:
8826068
DOI:
10.1093/fampra/12.4.474
[Indexed for MEDLINE]

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