Literature DB >> 18429871

How I do it: sample size calculations.

J O'Hara.   

Abstract

Sample size calculations are integral to project design. A description of the underlying theory behind them is set out. Required are the significance level, the power, the clinical difference and the standard deviation. Douglas Altman's nomogram is particularly useful for sample size calculations for comparing independent samples.

Mesh：

Year:  2008        PMID： 18429871     DOI： 10.1111/j.1749-4486.2008.01668.x

Source DB:  PubMed          Journal:  Clin Otolaryngol        ISSN： 1749-4478            Impact factor:   2.597


  6 in total

Review 1.  Quality of the supportive and palliative oncology literature: a focused analysis on randomized controlled trials.

Authors:  David Hui; Joseph Arthur; Shalini Dalal; Eduardo Bruera
Journal:  Support Care Cancer       Date:  2011-09-21       Impact factor: 3.603

2.  Implementing intelligent physical exercise training at the workplace: health effects among office workers-a randomized controlled trial.

Authors:  Tina Dalager; Just Bendix Justesen; Mike Murray; Eleanor Boyle; Gisela Sjøgaard
Journal:  Eur J Appl Physiol       Date:  2016-05-28       Impact factor: 3.078

3.  Magnesium therapy improves outcome in Streptococcus pneumoniae meningitis by altering pneumolysin pore formation.

Authors:  Sabrina Hupp; Sandra Ribes; Jana Seele; Carolin Bischoff; Christina Förtsch; Elke Maier; Roland Benz; Timothy J Mitchell; Roland Nau; Asparouh I Iliev
Journal:  Br J Pharmacol       Date:  2017-10-19       Impact factor: 8.739

4.  Sphenoidotomy kinetics in patients with chronic rhinosinusitis without nasal polyps.

Authors:  Panagiotis D Pyriochos; Konstantinos Markou; Jannis Constantinidis; Iordanis Konstantinidis
Journal:  Acta Otorhinolaryngol Ital       Date:  2022-02-07       Impact factor: 2.618

5.  A conceptual model for worksite intelligent physical exercise training--IPET--intervention for decreasing life style health risk indicators among employees: a randomized controlled trial.

Authors:  Gisela Sjøgaard; Just Bendix Justesen; Mike Murray; Tina Dalager; Karen Søgaard
Journal:  BMC Public Health       Date:  2014-06-26       Impact factor: 3.295

6.  Magnetic resonance imaging at 7.0 T for evaluation of early lesions of epiphyseal plate and epiphyseal end in a rat model of Kashin-Beck disease.

Authors:  Yong Li; Pengde Kang; Zongke Zhou; Fuxing Pei; Qing He; Dike Ruan
Journal:  BMC Musculoskelet Disord       Date:  2020-08-12       Impact factor: 2.362
  6 in total

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