A Kraemer-type Rescaling that Transforms the Odds Ratio into the Weighted Kappa Coefficient

A Kraemer-type Rescaling That Transforms the Odds Ratio into the Weighted Kappa Coefficient

In a validity study a dichotomous variable Y is often compared to a ‘gold standard’ variable X. For example, in a medical test evaluation one has a ‘gold standard’ evaluation of the presence/absence or type of a disease against which a test is assessed. A 2× 2 study can be summarized in a table like Table 1 (Warrens, 2008a, 2008b, 2009). In Table 1, the four proportions a, b, c, and d character...

the investigation of the relationship between type a and type b personalities and quality of translation

چکیده ندارد.

The Fekete-Szego Coefficient Functional for Transforms of Analytic Functions

An Estimate of the Odds Ratio That Always Exists

This article proposes an estimate of the odds ratio in a (2 £ 2) table obtained from studies in which the row totals are Ž xed by design, such as a phase II clinical trial. Our estimate,basedon themedianunbiasedestimateof the probabilitiesof success in the (2£2) table, will always be in the interval (0;1): Another estimate of the odds ratio which has such properties is obtained when adding .5 t...

Statistics notes. The odds ratio.

In recent years odds ratios have become widely used in medical reports—almost certainly some will appear in today’s BMJ. There are three reasons for this. Firstly, they provide an estimate (with confidence interval) for the relationship between two binary (“yes or no”) variables. Secondly, they enable us to examine the effects of other variables on that relationship, using logistic regression. ...