Two-Stage Screening: Serial Testing & Combined Accuracy
This lesson is part of the course
In this lesson
You combine two tests in series (only people positive on both are referred), calculate the combined sensitivity and specificity, and compare cancers found, false referrals and PPV with the one-test programme.
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Lessons in this course
- From Programme Data to a 2×2 Table: Sensitivity, Specificity, PPV & NPV Locked
- PPV & NPV Across Target Groups: Prevalence Changes Everything (with a Chart) Locked
- Choosing the Cut-off: ROC Points, Youden Index & Colonoscopy Capacity Locked
- Two-Stage Screening: Serial Testing & Combined Accuracy Locked
- Programme Yield: Detection Rate, Number Needed to Screen & Colonoscopies per Cancer Locked
- Uptake & Coverage by Group: Measuring Equity Gaps (with a Chart) Locked
- Cost per Case Detected & a Simple Cost per QALY Locked
- Lead-Time & Length-Time Bias, Interval Cancers & the False-Positive Burden Locked