Which attribute of a screening test refers to its ability to give the same result when repeated on the same subject under identical conditions?

• A Validity
• B Yield
• C Sensitivity
• D Reliability ✓

Explanation

Reliability, also called repeatability or precision, is the extent to which repeated applications of the same test on the same individual under the same conditions yield consistent results. It is affected by observer variation, biological variation of the subject, and errors of the method. Validity refers to the ability to measure what it claims to measure, expressed by sensitivity and specificity, while yield is the amount of previously unknown disease detected by screening.

Reference: Park's Textbook of Preventive and Social Medicine, 27th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.