Zhang, Bin <br/><br/>
Mann-Whitney U test and Kruskal-Wallis test should be used for comparisons of differences in medians, not means: comment on the article by van der Helm-van Mil et al.  [electronic resource] 

 -  Arthritis and rheumatism  May 2009 
 - 1565; author reply 1565 p.  digital 
<br/><br/> Publication Type: Comment; Letter 
<br/><br/><label>ISSN: </label>0004-3591 
<br/><br/><label>Standard No.: </label>10.1002/art.24497  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Statistics, Nonparametric