Indices Used in Epidemiological Surveys Assess Incidence,prevalence,and Risk Factors for Diseases

The importance of calibration and reliability of clinical examiners in research is expressed in each of the following statements EXCEPT one.Which one is the EXCEPTION? A) Any change in study index should reflect treatment efficacy. B) Change in index reflects examiner use of the index. C) Interexaminer and intraexaminer reliability is critical to study validity. D) Variability leads to the possibility of having statistically significant differences.

Bleeding indices are objective because bleeding is there or it is not there.Bleeding indices are subjective because of how and where bleeding is elicited. A) Both statements are true. B) Both statements are false. C) The first statement is true; the second is false. D) The first statement is false; the second is true.