Thanks 1zmm for the article. It's indeed helpful. As explained in this paper, I did calculate other parameters such as Prevalence index, Bias index and Pabak stat. However in my case, the prevalence index (-0.88) and the bias index (-0.04) turn out to be negative values, but the PABAK value looks alright 0.76. Please see below all the parameters that I calculated Any advice on how I interpret these negative values? Is it alright to get the negative values in this calculation? I am sure I have calculated those correctly. (The question that I am tasting here is " was the risk communication (between the physician and the patient) present " ? In the original example 1= Yes and 2=No.) Below are other parameters: expected proportion of agreement, 0.8864 proportion of positive agreement, =0 proportion of negative agreement = 0.94 prevalence index, index= -0.88 bias index, index = -0.04 PABAK= 0.76 Any advice on what values would be ideal to be used in the paper and how to interpret the negative values would be appreciated! Thanks much! Ashwini
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