Brody Issues in Preventive Services-Vision 11 .3.11

Brody Issues in Preventive Services-Vision 11 .3.11 -...

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1 1 ISSUES IN THE PROVISION OF PREVENTIVE SERVICES CASE STUDY: SCREENING TO PREVENT VISION LOSS IN CHILDREN
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2 I. PREVENTIVE SERVICES A. COMMUNITY SERVICES • Municipal filtration of drinking water • B. PERSONAL SERVICES • Screening for disease in asymptomatic
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3 II. U.S. PREVENTIVE SERVICES TASK FORCE • What screenings should be provided? • What is the difference between screening and diagnosis? • Is the screening test effective? • What is the cost to detect a case vs. to treat ? • Is there effective treatment if disease is detected?
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4 III. CRITERIA OF U.S. PREVENTIVE SERVICES TASK FORCE - EFFECTIVENESS A. Test should detect disease earlier than without screening B. Test should be accurate
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5 1. SENSITIVITY: Proportion of persons with condition who test positive (true positives) 2. SPECIFICITY: Proportion of persons without the condition who test negative (true negatives)
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6 3. POSITIVE PREDICTIVE VALUE (PPV): Proportion of persons with positive test who have condition
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This note was uploaded on 02/27/2012 for the course USP 144 taught by Professor Lewis during the Fall '12 term at UCSD.

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Brody Issues in Preventive Services-Vision 11 .3.11 -...

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