~-.~JiVIi~ s«M .

lsperfact:au of the . :a:a colletc:cn taola alone, haaver, ney
noe be aufficient to uPlain o,:r rasults . It is the .ny in Nuch ncn
laper?ections affectwd the respmse of zavs via-a-vis tx res{mse of
cartxola tna: any ptc.ride addil~1 m"xieratanditq . .gr : .i . .e can
anly spern:ac- on this satter . Our --es'a17s sUqqot thnt the ceaes
owy )~ wrlerepcrted their aioorue to eaeLl pWiva sadcinq- 9uh
a p[ralea is otten sentiae .d in relac-an to r.Hies in .Lich the
surycsed e4.wure fs ao=ially us.4sitatlew as is tho aae vitti drug
or alaohol use . in the present i .'v-snte, Nuewr, there is no anh
stiamti :aticn attaiwl to espoeote . Lt is, attet all, the wdcM of
orliers . aM mt the patient'a wn risk fnetor that is being
lsplieatd . xeuer,hless, patielta for vhateiar reason my have felt
the need to m"vnimize tMi . Cyoaore to anything that potanttally they
mi5ht have been able to avold . IfNorepo[tinq of eVisu:e by cantmis
asy aiso . in tlroory . have piod~x.ed the results aheerved . In practice,
tw.ever, there is no cviollicg raason to baleiva that cantrols '.oold
benefit frvs such bdsrviour . As a maeqoenre .e Aeve disownted
o.ereportiry as a poesiDility) .
'CrcowlrrK this doneent re have presented a sumery of Cie
inforaetion cvr-mtty available cn the relationship bet+een lur,
crKer ud passive simking . Li ,he !sst part re !uva revi-wd tx
nepr epidenieloCic stvoies en the wo7er.t, as Mell ee aoae rele1nnt
laeoratcry data . Sne a .jcr pos•1on of this dac~ane+t, haaver. nts
yeen devoted to t1e dee. ..-ptfon of tne setbdology and the results o!
this . laryest epidemioleqle ruM' so :ar _^.cdr,rd to rr.,ins the
http://legacy.library.ucsf.edu/tid/dsk94c00/pdf
afotenentrmd assoclatian . Both the streqW aid waak :nasaas of . the
study heve oeen ftdivred= Wt Mwq tlwe are pur into a balance, .e
helelw to Laua gathsrd ar ot the 6 .K dau aeta to ju* the
estmse of the T¢pY.ad ralatiauhip.
Ye .err aeble to mnfism an ~.-'~ atio^ with the aat cvmnnly
used ea .wao of apoaure fspouse wdtin7) . bnt e+ did find an affect
doe to eqoeare to pasive swcict-4 in the Iwsetnad . 'tlnaa retolts.
altFnvgh only in paetJal agce+smnt wdth tlw of otl .r sddias, are
vamsiatent rith the .xistaa of a s•all to sedersta etfect af puaive
eeokLng on lun7 neoer risks . 14 did eet tJd an effact ive to
eq3on" to a ssaivs aaycLq in the wtlPlaa .. We fasd. lo.ver . a
dsaeuad risk in lunq unoer with :n'^°e' nq aa@oeure to passive
aackinq in social drnnreanas . FeesiEle reesma for suCt findLps
Mve been dfaaused aeoue .
Out fLslLgs au7yast tAat the prwims atudiae .ry have
orecestLsted the elfect attributable to passive asoMrq. 9Lvh a
ponat6i11ty tias 6 an pcqsie7 by tMr Mc oatand that a typiol
aysaora to passive tddny is tely eqoivalurc to arekLq actively
les than oea cigarette per day IMieA in itself amveys risks that
are lowr than the tw-fold incswe peo{rned for pwfve ssekLq) .
Itrtlydaloqlc prable e that say !we ld to sor h over.eeL.tion of the
effect have tsnn poifrcwl oot in Crpoar 1, as aell as in this thsptee .
As Is .aIl lmowa to epidmuoloqiscs, the rwlts of ane ac+Wy --
or even a few stodies-- are seldm suffinarc to ans .er all questlou