ets exposure, lung cancer - Legacy Tobacco Documents Library

http://legacy.library.ucsf.edu/tid/wyk81f00/pdf
contounding eftect by aqe tt7at to some extent was accounted ta n the
stratdied analysis . The smal rxxnber ot cases and tow statabcal power,
militate against the pouibiiity of achi .vuN stansticalty srgndicarn
resuits . Pt is also mposs#Ne to sssass eftect mod'dication witt, so tew
cases .
For our ma(ar exposure tactor of irsterettt husband smokng status n
marriage, summary rate raWs of 1 .94 (95% C .l. 0.46-824) and 2 .47 (B5• .
C .I . 0 .29-21 .te) were obtanad for past and currenn exposure respectn+ely
when compared to the refererd group o1 navef exposed . A smilar
doubbng of the nsk was observed wnen the husband's smoking status
was dichotomued nto never and ewr smoked, RR of 2.04 (95% C .I . 0 .5d-
7 .55), No increased nsk of king ctnqr was observed in this popu(ation
for the subiects own smokng sYariis . Fiowever, when smokers of more
than ten pack yeus oi caga»tte amok»g were tanpared to the referertt
group 04 non-smokers iTere was increased risk obserued, RR of 2 .22 (95%
C .I . 028-17 .74) . The sofitary case n ttN ecposed category ikustrates
the equivocal nature Ot these resutlf .
There is a suggestion of a decreased risk for those subtects who have
anended college versus ttwse with a high school educaUon or less and
an increased risk tor subtects with blue colar work,ng spouses compared
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