Knottnerus, J A <br/><br/>
[Roaming through methodology. XXXIII. Ethics of sample size estimation: less subjects needed for a one-sided than for a two-sided statistical investigation].  [electronic resource] 

 -  Nederlands tijdschrift voor geneeskunde  Jun 2001 
 - 1051-4 p.  digital 
<br/><br/> Publication Type: English Abstract; Journal Article; Review 
<br/><br/><label>ISSN: </label>0028-2162 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Case-Control Studies<br/>Clinical Trials as Topic--methods<br/>Data Interpretation, Statistical<br/>Ethics, Medical<br/>Humans<br/>Research Design--standards<br/>Sample Size