Pack years is the number of:
A) cigarettes per day $\times$number years smoking.
B) packs per day $\times$number years smoking.
C) packs per week $\times$number years smoking.
D) packs per month $\times$number years smoking.

Question

Quizplus · Accepted Answer

Pack years is calculated by multiplying the number of packs of cigarettes smoked per day by the number of years the person has smoked. Therefore, the correct answer is B, which is packs per day multiplied by number of years smoking.

Pack Years Is the Number Of: A) Cigarettes Per Day ×\times×

Pack Years Is the Number Of:
A) Cigarettes Per Day $\times$