Considerations in determining sample size for pilot studies

Research in Nursing & Health
Melody A Hertzog

Abstract

There is little published guidance concerning how large a pilot study should be. General guidelines, for example using 10% of the sample required for a full study, may be inadequate for aims such as assessment of the adequacy of instrumentation or providing statistical estimates for a larger study. This article illustrates how confidence intervals constructed around a desired or anticipated value can help determine the sample size needed. Samples ranging in size from 10 to 40 per group are evaluated for their adequacy in providing estimates precise enough to meet a variety of possible aims. General sample size guidelines by type of aim are offered.

References

Jan 1, 1989·Nursing Research·P A Prescott, K L Soeken
Sep 15, 1995·Statistics in Medicine·R H Browne
Jun 8, 2000·Applied Nursing Research : ANR·N JairathC Parsons
Sep 5, 2003·Journal of Clinical Epidemiology·Andrew J Vickers
May 13, 2004·Psychological Methods·Scott Tonidandel, John E Overall

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Citations

Sep 22, 2011·Supportive Care in Cancer : Official Journal of the Multinational Association of Supportive Care in Cancer·David HuiEduardo Bruera
Jun 27, 2013·Journal of Palliative Medicine·Deborah L VolkerTracie Harrison
Jul 16, 2010·Public Health Nursing·Marylyn Morris McEwenLourdes Barrera
Apr 13, 2011·BMC Health Services Research·Chiung-Jung Jo WuKaram Kostner
Dec 18, 2012·Journal of Medical Internet Research·Géraldine MartorellaManon Choinière
Jun 29, 2014·Women and Birth : Journal of the Australian College of Midwives·Angela SwiftRebecca Kimble
Oct 3, 2014·Journal of Medical Internet Research·Moyez JiwaXingqiong Meng
Jul 15, 2015·Informatics for Health & Social Care·Rita IsmailNancy Fugate Woods
Mar 10, 2016·European Journal of Oncology Nursing : the Official Journal of European Oncology Nursing Society·Sehrish SajjadShafquat Rozi
Sep 26, 2014·Disability and Rehabilitation·Alda MarquesDaniela Figueiredo
Feb 26, 2015·Disability and Rehabilitation·Leigh Anne HaleGareth J Treharne
Mar 10, 2016·Pregnancy Hypertension·Gökhan InangilErcan Kurt
Feb 3, 2016·BMC Complementary and Alternative Medicine·Jungtae LeemSanghoon Lee
Oct 4, 2015·Archives of Physical Medicine and Rehabilitation·O VerschurenJ M Visser-Meily
Jul 7, 2015·Journal of Clinical Epidemiology·Wolfgang ViechtbauerRik Crutzen
Jan 20, 2016·Supportive Care in Cancer : Official Journal of the Multinational Association of Supportive Care in Cancer·Claire E WakefieldRichard J Cohn
Dec 30, 2011·International Journal of Nursing Studies·Christine L CovellJudith A Ritchie
Oct 11, 2011·Burns : Journal of the International Society for Burn Injuries·S D CampanellaA-S Ramelet
Feb 2, 2016·Computers, Informatics, Nursing : CIN·Katie L MysenRonald Piscotty

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