Qalys are good and Dalys are bad
Quality years? Yes, please.
Disability years? No thanks.
That’s the difference between these two adjusted life year metrics.
A Quality Year is simply a year lived in full health.
A Disability year is a year lived with disability.
The metrics for Qaly are straightforward: 100% is perfect health, 0% is, well, dead.
For Daly the metrics are similarly straightforward if you simply consider iy as a measure of how disabled you are. How disabled are you with a broken leg? Maybe 15%? (This is a good time to note that both Qaly and Daly are subjective measures, which gain power through comparisons and statistics.)
How disabled are if you’re dead? That wouldneed to be 100%. We can get into some interesting meta math and consider that torture ahould be ranked even higher than death, but death’s finality and irrwversability can serve as its trump card here and we’ll let it hang on to the...
