ets exposure, lung cancer - Legacy Tobacco Documents Library

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http://legacy.library.ucsf.edu/tid/wyk81f00/pdf
Th .re w.re no casas ot " canc.r for *Vw saa an u» subjects who
had liv .d for 1 .10 yean with a arTwka}r . For males tRere were no cases
among ttiosa who had workad eleven years or more with a smoker .
Four of the tfvrieen cases ocourred among form .r smokers aM of whom
smoked more uan 9an pack years of cs9ar .des . In a s»afied analysu .
adjusting for aqe and aex. 1lye rate ratio of " cancer among those
amoknq more tfun trn pack yaars compared to tllosa who wae non-
smoke+t was 2s1 (95`h C .f . 0.T8-1020, p-0 .0fs). Cons.vwntly, past acavvs
smoknq .xposwe was tr.al .d as a ooMeurx3er and contralNd for by
suatdication in addRional artafysls.
The results of stratified anaryses for sefected expostue factors
controlRr.q for age and sutaocts past srnokin9 status ar* presented 'en
Tabre 5 .9 for fernales and Table 8 .10 fer males. The diNerances in the
cnrde RR and adjusted RR wxficate sortw confounding due to past actrve
smokinq arKVor age difl.rences n tM popufation and therefors tr~e
adjusted summary rate ratios are considered as unconfounded by tne
subjects pazt smoking status or aqe . For females who had Iived eleven
or more years with a smoker as compared to females who had newr
tived with a smoker the rate ratio of (unq cancer was 1 .16 (95y C.t.
0 .20.6 .61) . For temahs v.tw Rad worked eWven or rror• years vntth a
smoker the correspondinp nte ratio was 1 .47 (95', : C .1 . 0 1 5- 1 A 06),
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