pack-year


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pack-year

n
(Medicine) a measure of the amount of cigarettes a person has smoked over an extended period, equal to one packet of 20 every day for one year
References in periodicals archive ?
Testing may benefit adults who are current or former smokers between the ages of 55 and 74 who are in good health and who have a 30 pack-year smoking history.
The USPSTF guidelines recommend screening for people age 55 to 80 who have a 30 pack-year smoking history (equivalent to smoking a pack a day for 30 years, or two packs a day for 15 years),
Patients ages 55 to 74 with at least 30 pack-years of tobacco smoking history (one pack-year = smoking one pack per day) who have undergone counseling as to the potential benefits and harms of screening should have a yearly LDCT," says Dr.
A pack-year measures the number of packs smoked daily for life.
Pack-year data show that most cases had pack-years of more than 20 years (21 cases, 47.
A 30 pack-year history would result, for example, from smoking a pack a day for 30 years, or two packs a day for 15 years, or half a pack a day for 60 years.
While the wording of the new recommendation is nonspecific regarding who should be screened, the Task Force elaborates in its follow-on commentary: Screening should start at age 55 and continue through age 79 for those who have [greater than or equal to] 30 pack-year history of smoking and are either current smokers or past smokers who quit <15 years earlier.
A pack-year is a measure defined as smoking 20 cigarettes a day for a year or any equivalent, such as two packs a day for six months.
Three simple questions yield the same credible pack-year count which physicians routinely use when taking histories from new patients.
A pack-year of smoking is defined as averaging one pack of cigarettes per day per year.