ets exposure, lung cancer - Legacy Tobacco Documents Library

Janerich, D ., Thompson, W .D . Varela, L .R ., Greenwald, P ., Chorost,
S ., Tucci, C ., Zaman, M .B ., Melamed, M .R ., Kiely, M ., and
McKneally, M .F ., "Lung Cancer and Exposure to Tobacco Smoke in the
Household," The New England Journal of Medicine 323 : 632-636,
1990 .
Conclusions based on a case-control study of 191 men and
women in New York State were reported in 1990 by Janerich and
colleagues, who wrote :
http://legacy.library.ucsf.edu/tid/wyk81f00/pdf
Exposure in the workplace was measured by
recording the number of smokers who worked
with each study subject during his or her
lifetime and the amount of time the subjects
spent working with these smokers . These
exposures were compared for case patients and
control subjects . Estimating the odds ratio
as a continuous variable for an equivalent
differential of 150 person-years of exposure
gave an odds ratio of 0 .91 (95 percent
confidence interval, 0 .80 to 1 .04), indicating
no evidence of adverse effect of environmental
tobacco smoke in the workplace . [emphasis
added]