|Reported by:||gschadow||Owned by:|
From Victoria Johnsson:
Dear Professor Gunther Schadow,
In my work I use Unified Code for Units of Measures (UCUM) for standardizing units in various clinical datasets. It works very well for most units in clinical data.
I noticed however that the UCUM specification does not mention the unit pack-year which is used to measure how much a patient has smoked.
Number of Pack Years = (Packs smoked per day) x (years as a smoker).
How do I specify this unit according to UCUM? Am I allowed to define it as a unit atom, [pack-year]?
I would be very grateful if you could help me. Thank you!