تجميعات برومترك طب الأسرة وصحة المجتمع — أسئلة اختبار الهيئة

1. A new screening test for breast lesions was compared with a mammogram. Out of 1000 patients, the mammogram detected 200 positive cases. The new test detected 180 cases and missed 20 (false negatives). What is the sensitivity of the new test? 90% Q: A screening mammogram is used as the reference standard for breast cancer detection in a population of 1,000 women. The mammogram identifies 200 women as having breast cancer. A new screening test is evaluated against the mammogram: It correctly identifies 180 of the women who were positive on mammography. It misses 20 women who were positive on mammography. Among the 800 women the new test identifies 50 women as false positive. What is the sensitivity of the new screening test?

1. 70%
2. 80%
3. 90% ✓
4. 100%

الشرح: Sensitivity = TP/(TP+FN) = 180/200 = 90%؛ المعلومة المفتاحية: Sensitivity = TP/(TP+FN).

2. A 6-year-old child with asthma is now complaining of cough, increased asthma attacks, and more frequent use of his inhaler. The mother reports that the father smokes one pack per day inside the house, and the mother uses shisha on weekends. What should be done to prevent worsening of the child’s symptoms?

1. Increase the dose of corticosteroids
2. Tell the mother to stop using shisha or reduce it
3. Advise the parents to reduce the child’s exposure to smoking ✓
4. Use a face mask

الشرح: يُنصح بتقليل تعرض الطفل للتدخين؛ المعلومة المفتاحية: secondhand smoke.

3. A study about covid vaccine was conducted, 10000 participants were divided into 2 groups randomly, the first group will take covid vaccine and the second group will take placebo. What is the type of study?

1. Cohort study
2. Case-Control study
3. Cross-sectional study
4. Randomized clinical trial ✓

الشرح: التوزيع العشوائي مع placebo هو RCT؛ المعلومة المفتاحية: randomized trial.