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Environmental Tobacco Smoke Measuring Exposures and Assessing Health Effects (1986) / Chapter Skim
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Appendix B: Method of Combining Data From Studies of Environmental Tobacco Smoke Exposure and Lung Cancer
Pages 284-288

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From page 284...
... _ Yes! ; lo Total Exposure Yes a ~ m to ETS No c ~ m2 Tot-al: me m4 T Therefore, T is the total number of people in the study, a is the number of people chronically exposed to ETS who also have lung cancer, b is the number of people chronically exposed to ETS who do not have lung cancer, c is the number of people not chronically exposed to ETS who have lung cancer, and ~ ~ the number of people not chronically exposed to ETS who do not heave lung cancer.
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From page 285...
... ~ ~ ~ ~o ~ ~ oo ~ ~ - ~O ~ ~ ~n 0 ~ ~ _ ~ oo 0 0 o - ~ - - - ~ ~ ~ o ~ - ~ 0 ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ - r~ oo oO \0 ~ ~ t~ r~ ~ _ - ~cr ~ ~u~ ~0 q" oo ~ ~ - - ~ ~ ' ~ ~_ , .
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From page 286...
... estimate of the relative risk was calculated using the method given below for combining the prospective studies. The number of people who are exposed to ETS who are expected, under the null hypothesis of no effect, to develop lung cancer is: m3-(m3/E)
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From page 287...
... Tx Tx (T-1) The variance of the natural logarithm of the relative risk was calculated using the published confidence limits for the estimate of the relative risk, except for one study (Gillis et al., 1984)
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From page 288...
... Hirayama, T Cancer mortality in nonsmoking women with smoking husbands on a large-scale cohort study in Japan.
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Key Terms

  • relative risk
  • environmental tobacco
  • tobacco smoke
  • chronically exposed
  • passive smoking

  • develop lung
  • natural logarithm
  • hong kong
  • people chronically
  • calculated using

  • fourth world
  • prospective studies
  • japanese women
  • swedish women
  • crude relative

  • risk values
  • odds ratio
  • published confidence
  • risk factors
  • rick factors

  • risk estimate
  • time trends
  • urban communities
  • involuntary smoking
  • greek study

  • following calculations
  • approximate variance
  • cancer mortality
  • heave lung
  • padre smoking


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