Work out cost per qaly instantly with clear inputs, formula shown and shareable results.
Divides additional cost by QALYs gained and compares the result with a willingness-to-pay threshold, also reporting net monetary benefit.
Cost per QALY
Cost per QALY = incremental cost / QALYs gained; net monetary benefit = QALYs gained x threshold - incremental cost
NICE uses 20,000 to 30,000 pounds per QALY; WHO-CHOICE historically used one to three times GDP per capita.
It stays defined when QALY gains are near zero or negative, where the ratio becomes unstable.