A screening test gave 90 true positives, 10 false negatives, 30 false positives and 270 true negatives. What is the positive predictive value?
Answer and explanation
Correct answer: A. 75%
- Step 1: The positive predictive value is the share of positive results that are true: TP / (TP + FP).
- Step 2: 90 / (90 + 30) = 75%.
Answer
75%.
Practise more Public Health and SUS.
Free questions with an explanation for every one, and full timed Revalida (Brazil Medical Diploma Revalidation Exam) mock tests.
More Public Health and SUS questions
- A survey of 2000 people found 50 with hypertension on the day of the survey. What is the prevalence?
- What is the role of primary health care in the SUS?
- Giving vaccines to prevent a disease is an example of which level of prevention?
- A municipality had 1000 children in the target group, and 700 of them received the vaccine. What is the vaccination coverage?
- Which phone number reaches the SAMU mobile emergency service in Brazil?
- What does the incidence of a disease measure?