Statistical primer: sample size and power calculations-why, when and how?
Statistical primer: sample size and power calculations-why, when and how?
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DOI:
10.1093/ejcts/ezy169
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发表时间:
2018-07-01
期刊:
影响因子:
--
通讯作者:
Siepe M
中科院分区:
文献类型:
--
作者:
Hickey GL;Grant SW;Dunning J;Siepe M
When designing a clinical study, a fundamental aspect is the sample size. In this article, we describe the rationale for sample size calculations, when it should be calculated and describe the components necessary to calculate it. For simple studies, standard formulae can be used; however, for more advanced studies, it is generally necessary to use specialized statistical software programs and consult a biostatistician. Sample size calculations for non-randomized studies are also discussed and two clinical examples are used for illustration.
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影响因子:
2.5
作者:
Taggart, DP;Lees, B;Gray, A;Altman, DG;Flather, M;Channon, K
通讯作者:
Channon, K
影响因子:
15.8
作者:
Guyatt, Gordon H.;Mills, Edward J.;Elbourne, Diana
通讯作者:
Elbourne, Diana
DOI:
10.1016/s0197-2456(00)00104-5
发表时间:
2000-12-01
期刊:
CONTROLLED CLINICAL TRIALS
影响因子:
--
作者:
Hsieh, FY;Lavori, PW
通讯作者:
Lavori, PW
DOI:
10.1136/bmj.c332
发表时间:
2010-03-23
期刊:
BMJ (Clinical research ed.)
影响因子:
--
作者:
Schulz KF;Altman DG;Moher D;CONSORT Group
通讯作者:
CONSORT Group
影响因子:
2
作者:
Freedman, L S
通讯作者:
Freedman, L S