Full analysis of a 2 by 2 table online. Odds - ratio The odds ratio takes values between zero ('0') and infinity. One ('1') is the neutral value and means that there. Online calculator to calculate odds ratio confidence interval for 2x2 contingency table. Many of these concepts are explained in detail in an online Evidence-based Medicine Two-tailed (to test if the Odds Ratio is significantly different from 1): Diagnostic Odds Ratio = (Sensitivity/(1-Sensitivity))/((1-Specificity)/Specificity);. The Yates value is corrected for continuity; the Pearson value is not. All four Chi-squares presented give probability values for the relationship between two dichotomous variables. It is directly related to log-linear analysis and logistic regression. If you have doubts about your results, use Fisher Exact instead. It represents the joint frequency distribution of the two properties. Statistics with Confidence 2 nd Ed. Square for explained variance. This calculator uses the following formulas to compute sample size and power, respectively: Home About the Journal Editorial board Indexed in Journal metrics For authors For reviewers Online submission. Popular Calculators Derivative Calculator Inverse of Matrix Calculator Compound Interest Calculator Pregnancy Calculator Online. A different approach is required in these circumstances.