Understanding medical tests: sensitivity, specificity, and positive predictive value

“Prostate cancer breakthrough as UK team develops more accurate test“ “A Simple 3-Part Test May Predict Alzheimer’s” “Portable device detects severe stroke in seconds with 92% accuracy” Headlines like these touting new medical tests often include impressive-sounding claims of accuracy. Consider this HealthDay story about an experimental breath test said to be “85% accurate” for … Continue reading Understanding medical tests: sensitivity, specificity, and positive predictive value