Does anyone know of some related text on how and when was smoking "pack-years" established for the first time and anything on the validity of this exposure assessment method/tool? I
What do you mean?
I think you must to check the nicotine or better say cotinine or nornicotine concentration on plasma.
check this paper.
http://ntr.oxfordjournals.org/content/early/2015/05/02/ntr.ntv087.long
Hello,
Methodology presenting risks associated with cigarette smoking on the basis of pack-years is used in the following article. I am not sure if it is the first article using this methodology but hopefully the full article will provide some of the answers you are looking for.
Lubin and Caporaso, Cigarette Smoking and Lung Cancer: Modeling Total Exposure and Intensity. Cancer Epidemiol Biomarkers Prev 2006;15(3):517–23
http://cebp.aacrjournals.org/content/15/3/517.long
Dear Eduardo and Lois, thankyou for your answers. I know a few studies which uses pack-years, what I am looking for is a methods paper where "pack-years" was first established (reliability and validity of the unit )
Hello,
It might be this one (but I don't have the actual study): Kahn, HA. (1966) The Dorn study of smoking and mortality among U.S. veterans. Report on eight and one-half years of observation. Natl. Cancer
Inst. Monogr. 19; which was discussed in the document at the following link:
http://www.wsiat.on.ca/tracITDocuments/MLODocuments/Discussions/smoking.pdf
If it is not helpful or a better answer is not forthcoming from someone else, it may be necessary to do this old school by ordering some of the earlier publications cited in the reference lists of the papers you do have and then reviewing the reference lists in those earlier papers and so on.
This article (Am J Epidemiol. 1977 Jun;105(6):534-43.
Smoking habits and changes in smoking habits as they relate to chronic conditions and respiratory symptoms.
Lebowitz MD.) mentions pack years but doesn't include a citation for the term. Something by Doll, perhaps (Smoking and lung cancer. Report to the Sub-Committee for the Study of the Risks of Cancer from Air Pollution and the Consumption of Tobacco., DOLL R., Acta Unio Int Contra Cancrum. 1959;15:1283-96, or the First US Surgeon General's report?