system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Evaluation of screening test is by-
assistant
The correct answer is  .<p>evaluation of a screening test is done by*specificity,*sensitivity,*predictive value of a positive test,*predictive value of a negative test,*percentage of false negatives,*percentage of false positives etc.</p><p>ref:park&;s textbook of preventive and social medicine,22 nd edition ,pg no 131</p>