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TABLE 4

Assessment of Research Design and Methods

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