pack years

A crude indicator of a person's cumulative cigarette consumption, which is equal to the number of packs (assuming 20 cigarettes per pack) of cigarettes smoked/day, multiplied by years of consumption

pack years

(pak yērz)
Person's cigarette consumption calculated as the packs of cigarettes smoked per day, multiplied by the length of consumption in years (e.g., 1.5 packs of cigarettes smoked per day for 20 years is 30 pack years).
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The Task Force recommends people between ages 55 and 79 with a minimum smoking history of 30 pack years get an annual low-dose CT scan.
Last year, for instance, the National Comprehensive Cancer Network (NCCN) recommended that people 50 (not 55) or older who have at least 20 (not 30) pack years of smoking plus one additional risk factor, such as having chronic obstructive pulmonary disorder or a close relative with lung cancer, also be screened.
Collecting data from several recruitment sites including UC, they then divided smoking exposures into never smokers, light smokers (fewer than 20 pack years, with a pack year being the equivalent of a pack a day for 20 years), moderate smokers (20-40 pack years) and heavy smokers (40 or more pack years).
ALTHOUGH it may sound like just another Rat Pack show, The Kings Of Swing is more a celebration of the music of the Las Vegas Rat Pack years rather than the personalities who performed it.
There was no significant difference between the groups for age, pack years of cigarettes smoked, total joints of marijuana smoked, or race (p > 0.
The data were adjusted for potentially confounding factors such as age, total energy intake, physical activity level, pack years of smoking, and NSAID use.
In longitudinal models, vitamin D deficiency exacerbated the effect of pack years of smoking on the decline in FEV1 over time.
Using an univariate ANOVA, there were no significant differences between the groups for age, IQ, history of abuse, pack years smoking, marijuana, or major depression (p>0.
The trial recruited 53,500 current or former smokers between the ages of 55 to 74 years of age with a 30 pack year history (number of packs per day x the number of years smoked = total pack years) since that high risk population would have the highest likelihood of being diagnosed with lung cancer.
This study is the first of its kind to examine a wide variety of smoking parameters, such as how long and how often a woman has smoked, the number of pack years smoked, whether she was a former or recent smoker, her age at smoking onset, and whether she started smoking before her first full-term pregnancy.
The tawny blonde, hand-roasted and lightly-salted pistachio kept company with ol' Blue Eyes during his notorious Rat Pack years and was also favored by Clark Gable, William Holden, Jack Benny, Dinah Shore, June Allyson, Rhonda Fleming and many other Hollywood icons.