Reliability means
ref: Park&;s 23rd edition pg138 Reliability / repeatability / precision: that is test must give consistent results when repeated more than once on the same individual or material, under the same conditions. note: Validity or accuracy: given by sensitivity and specificity. Diagnostic power or Predictablity: includes positive and negative predictive values. in order to include or exclude the person.
Number of times the same results on repeated trials
Number of times variation is seen
Extent of accuracy
Level of simplicity
Screening