TABLE 4

Assessment of Research Design and Methods

Component of Study and RatingExcellentGoodFairPoorUnsatisfactory
Design and MethodsHighly appropriate sample or model, randomized, proper controls AND outstanding accuracy, precision, and data collection in its classHighly appropriate sample or model, randomized, proper controls OR outstanding accuracy, precision, and data collection in its classAdequate design but possibly biased OR adequate under the circumstancesSmall or clearly biased population or model OR weakly defensible in its class, limited data or measuresAnecdotal, no controls, off target end points OR not defensible in its class, insufficient data or measures