ets exposure, lung cancer - Legacy Tobacco Documents Library

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greater tharl 1•00 (tanjt 0 .l1•t3f), Whcn
smokers aad tbosc oaly passivety ezposed
were 57oupod (Table IIB), the 3tR of actire
smokers was 323, and that tor the pas••
aive smokers a lioa-sipifinslt 114 .
Quanrij`3coriorl of prusrve t++sakilsp
CYu .r detailed lntcrvicws ailovred us to
e3tirna.ie the amounu of pusive smoking
from vsrious piacen in terau of boun or
ycarY (Table III), Smokm as a group
had more ezposure to passive smokinr
from others thin the never•smokers . Dr
pendinj on ahe ur,it of messure :nent, whe•
ther hours or years, we tound that araong
the smokers, the patieau had rnore hours
of exposure . but the controls had more
yex :-s . Amot:Q the aever•smokers, the con•
trnis acalaay had more hours or years
ihan tbe pltueau, but these differences
were miai.ma:. Hours per yr.ir was used
as a meuure of inuasity of passive eorpo
aurz . Overall, there was to tizzinca .at
dittcreacc in ezposurn levets bsc.veea patier,u
and eontrols, whether t,hey wex
smoke,-s or asver•smokers .
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Since about 9011 of the tota .W aatounu
of passive srrlokins car»e from the home .
Table IV ahows the average eontriputian
from each whabitinj relative who amokod
!n the presence of the szabject• Ouly diretl
tzposure was coustud. Husbaslds who
amoked, but s4Sd tu+t ssxpose their wiru
to passive smokiag for .uious tsssoas,
aucb as tivfaf ovezseu, on mvellisiE }obs,
etc ., wese llot included irl t!x sstimatiotu .
From the C2iinese culttlral practice of ha•
viag extended famS]y mcmbsrs living to
getber, the fetma]c could bc exposed to
her partau' cirsrettes or pipe whtn younj,
to her busband's and in•laws' tobacto du•
ring marital lfte, and to her children's ci•
rarcttes when old . Atthouth in terms of
hours/pcrson, parenu wert found to be
a heavy source of sidestrearr, smoke, only
a minority of patienu or eontrols wert
to exposed• The most frcquent source was
that rrom the husband_
About 2/3 of the toul hours of tobae•
to ezposurc were calculated from our
dau to be from the husband's cirarettes .
hoth cues and controls had ar averagc
of about 20•000 houn of passive sxrsoicuig
trom theis homes . to that to signii,cant
ditfercncr in exposure levels waa fotsnd
betwes:, them .
TaIz IV • jwo•cY .r P.m .ti srrouet a 400" ,
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