... to emphasise the equal importance of qualitative research (Cassell et al., 2006). Despite the increasing recognition of the appropriate uses of qualitative research methods, comparatively smaller amounts of qualitative research are accepted for publication than their quantitative counterparts...

... of factors and their chosen levels are shown in Table IV . The coded design matrix and the response values corresponding to each trial condition are shown in Table V . The numbers in parentheses represent the actual run order. © MCB UP Limited 2003 Research methods Experimental design...