ngmasuku6394 ngmasuku6394

24-01-2024
Health

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A patient reports smoking a pack of cigarettes a day for 9 years. He then quit for 2 years, and then smoked 2 packs a day for the last 30 years. What are the pack-years for this patient?
1) 19.5 years
2) 39 years
3) 41 years
4) 69 years

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