Which one of the following will be affected by inter observer variation in epidemiological studies-
ref: Park&;s 23rd edition pg 138 Reliability / repeatablility / Precision: that is test must give consistent results when repeated more than once on the same individual or material, under same conditions. Reliability of a test depends on 3 major factors: Observer variation (intra and inter) Biological variation Errors relating to technical methods.
Sensitivity
Predictive value of the positive test
Specificity
Reliability
Screening