Biostatistics & Research · single question

In a COVID-19 study, 95 of 100 people who had COVID tested positive. What is the sensitivity?

  1. 75%
  2. 95%
  3. 90%
  4. 100%
Show answer and explanation

Correct answer: B. 95%

Sensitivity = TP/(TP+FN) = 95/100 = 95%. Note: No calculator is provided on the INBDE.
  • A. ❌ 75% is too low.
  • B. ✅ CORRECT – 95 true positives out of 100 = 95% sensitivity.
  • C. ❌ 90% would mean 10 false negatives; the calculation gives 95%.
  • D. ❌ 100% would mean no false negatives; 5 cases were missed.

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