Validity of a test is based upon all except
Ref:Parks 23rd edition pg 138 Validity (accuracy): refers to what extend the test accurately measures which it purpos to measure. has two components: sensitivity and specificity. note: Precision / repeatability / reliability: that is test must give consistent redults when repeated more than once on the same individual or material, under same conditions.
Sensitivity
Specificity
Precision
Accuracy
Screening