Positive Predictive Value

Also written as PPV.

This three test strategy as well as retesting aims to ensure that at least a 99% Positive Predictive Value\n(PPV) is maintained, and false positive misdiagnosis is avoided.

What our notes say

• This three test strategy as well as retesting aims to ensure that at least a 99% Positive Predictive Value\n(PPV) is maintained, and false positive misdiagnosis is avoided. (Kenya-ARV-Guidelines-2022-2)
• to improve the positive predictive value of the screening (Devendra K. Gupta, Krishna M. Goel - Hutchison’s Paediatrics. chdhe-Jaypee Broth)
• The concen­tration of\nspecific IgE with a high positive predictive value for clinical\nhypersensitivity varies between different allergens. (Devendra K. Gupta, Krishna M. Goel - Hutchison’s Paediatrics. chdhe-Jaypee Broth)
• Disease prevalence affects positive predictive value (PPV) — high prevalence → higher PPV for same test (CRUSH COURSE YEAR 3 Semester 1 WORK (Part 1) — Revision Guide)
• Positive Predictive Value (PPV): Probability that a person with a positive test result actually has the disease. (Analytical Techniques and Laboratory Principles — Study Notes)
• Higher disease prevalence generally increases the Positive Predictive Value (PPV) of a diagnostic test. (Analytical Techniques and Laboratory Principles — Study Notes)

Study material on Positive Predictive Value

• Type 1 diabetes
• Analytical Techniques and Laboratory Principles — Study Notes
• Medical Biochemistry Exam Study Guide — MCQs & Long Answers — MCQ Bank
• CRUSH COURSE YEAR 3 Semester 1 WORK (Part 1) — Revision Guide

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