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Dear R Users, I have a question based on my research. I am analyzing reader-based diagnostic data set. My study involves diabetic patients who were evaluated for treatable diabetic retinopathy based on the presence or absence of two pathologies in their eyes. Pathologies were identified using the clinical examination (Gold standard method). In addition it can be identified by taking digital images of patients? eyes and this method is cost effective. Finally two rea...

...get stuck exactly in the same point. Should I have follow any of the previous steps indicated in the manual as preparation. I skip that because as I told you I don't have much experience with this. Any ideas? Care2 make the world greener! Over 10 million children die from preventable or treatable diseases every year. Urge Congress to act today: http://go.care2.com/childact http://www.Care2.com Free e-mail. 100MB storage. Helps charities.