Likelihood Ratio indicates the likelihood that a given test result would be expected in a patient with the target disorder compared to the likelihood that the same result would be expected in a patient without that disorder. The NNT is a useful number when you want to compare the costs and adverse effects of a treatment with its benefits. Odds Ratio describes the odds of an experimental patient suffering an adverse event relative to a control patient. P Value refers to the probability that any particular outcome would have arisen by chance. The smaller the P value the higher the significance.
Predictive value is related to the sensitivity and specificity of the test.
Relative Risk is the risk of developing a disease in the exposed group divided by the risk of developing the disease in the unexposed group. Relative Risk Reduction is the proportional difference between the rates of events in the control group and the intervention group. Relative Risk Reduction is always a larger number than the Absolute Risk Difference and therefore tends to exaggerate the difference. Sensitivity measures the proportion of patients with the disease who also test positive for the disease. Specificity measures the proportion of patients without the disease who also test negative for the disease.