Social & Preventive Medicine A screening test was positive in 50% of diseased and 10% of healthy population. What is the specificity of the test? A 0.5 B 0.9 C 0.83 D 0.064 💡 Explanation A screening test was positive in 50% of diseased and 10% of healthy population. What is the specificity of the test? ✓ Correct Answer: B. 0.9