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Retired NBME 24 Answers

nbme24/Block 4/Question#30 (reveal difficulty score)
An investigator is studying an outbreak of ...
Only cookies are independently associated with E. coli cases 🔍 / 📺 / 🌳 / 📖
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 +67  upvote downvote
submitted by niboonsh(409)
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thsi nqtoiues semak em twan to aet an e oilc ikecoo and eoph i leedb out

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caitlyncloy  cipk C nad ovme on wsa ym taetygrs :P pelh oll +2
thegooddoctor2  lol oogd noe +1
sparta  LOL khnat oyu fro ihts mntocme +



 +15  upvote downvote
submitted by doodimoodi(74)
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Did on oen teicon htta het sddO otrai on teh opt ftel is rnow?g mA I gssinim nogeitmhs? If oyu alueacclt ,ti its' 6 sjut ikle teh opt hrtig .n..eo.

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mjmejora  tstha caaluytl yealrl unynf +
yex  Baecesu I aisd o,s sieppla ..hee.r -/: +1
doodimoodi  tnCa ebivele we pay 60$ for shti pcra +50
aisel1787  tebs mmconet domd)ioiood +1
b1ackcoffee  tath cfunigk whret me ffo on ma.xe I asw kiel is ehert na etcffe oaniiiodmctf by "tNo dirnikng .m"kil hte ucf!k +2



 +8  upvote downvote
submitted by sne(59)
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OR tg&;1 acisetdin aecsrdnie roccrenecu of vneet. Teh nyol OR regerat nath 1 swa ni eht btlea atht dcitanide tath eht jebutsc tae kocosei tub dtidn' nikrd kml.i s,Tuh thta si eht ylon one twih a iintincsafg ccrnoueecr

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For a more systematic approach. First look at cookies p-val is sig when not stratified, the top table is stratified the OR > 1 => sig => cookies have association.

Then look at milk p-val is sig when not stratified, the bottom table stratified the OR = 1 => loss of significance => milk have no association.

+1/- peqmd(75)

Uworld ID 1173 has a good explanation for how to look at stratified analysis.

+/- peqmd(75)


 +8  upvote downvote
submitted by qiss(20)
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oFr eloepp who ereayllng ahd oubrtel naiegrd het tow :chstar

rtFis rtach: eW eetraspda het terien otoapupnil iont owt slealmr npsaultpooi ot tset for hte kiscooe ctfeaf. nI Pnooiulapt A radnk( lk)im rhete aws na odds orati of 6 o(typ ni het luaatc .a)hrct nI ulPianootp B d(id ton rndik )ilkm erhet swa an sddo otair of .6 cinSe eth ddos oratis rae not 1, we anc ouencdlc ttah het oieckso veha na ffecte sersalgrde of eth lnoatppuoi (ei arkdn kilm eoelpp serusv iddn't rkdni iklm eep.lo)p

ndcSeo :hrtac New est of aupolinpsto to stte fro eht ftceef of .ilmk nI nopltaPuoi C (tea so)ckeio there swa an sdod rioat of .1 In iupaotnoPl D idd( tno eta ico)soek erhet swa asol na ddso otair of .1 siTh mnase hatt milk did tno vhea an cetfef eevr nda nidtd' icutnoterb to teh dessi.ea

yOnl" eooskic aer lyenddnepietn eaidotsasc hwti E. oilc ssae"c esman atth olyn het cooeski cuesa the eadseis uoiwtth het escteff of nshmteigo seel.

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 +7  upvote downvote
submitted by pg32(218)
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eTh aftc htat hte odds itrao ni eht tpo tlfe si trcnrcoei makse hsti eoqintus evyr tiuiffcdl. It askme ti epaarp as if hte siokceo are svtaueiac ubt eht limk had smoe crttieevop froact. oS osiuobxo.n

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drpatinoire  oGd I ghhuott allyott eth maes awy sa ouy .did I sdtera ta tsih sqnituoe orf ta aeslt 5nmi adn sdkae emsfyl hat'ws gworn tihw ym sctssiit.at +1



 +7  upvote downvote
submitted by youssefa(162)
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tinlIiyla lmki iirngdnk wsa icdseastao thwi icl.Eo rekouabt thwi R=39O. dan t01P&;l0.0 a.tcf.(Sni.nii)g frtAe istfaitrniatoc onit eat coosike adn idd tno aet ecskooi OR abemec 1 sneiatd fo .39 aneming the soiocinatas prdidaap.see e,Toefrehr etagin cesokoi was a onerndcufo nda terhe is no alre coiosinaats ewtebne nkngiidr milk nad dceE.oin.l.,.sia.t ks'iml th(e unn)rooecfd nttriionbuoc swa lrepisobnes for eht RO of .93 in teh tsirf apc.le Tish asw eerrfuhtd smtoddaentre itwh OR of 6 in the iokcseo enlao urgo.p

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 +1  upvote downvote
submitted by sattanki(82)
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sihT eon etreh erew frou odsd rtaio,s one edodpvri rdnue ceha .bleta Teh oyln one ahtt ahd na dsod artio raegert athn 0.1 asw het etabl in eth top tihrg (dsdO taRoi = 6, I vbie),eel hiwhc hewn you lodeok ta eth la,besl lde ot het right eas.nrw

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 +1  upvote downvote
submitted by famylife(110)
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"nA odds oriat fo 1 ntdecasii atht eht cdtnionoi ro tenve dneru stduy si luyaelq lliyek ot ourcc in hobt ogr.sup nA sdod toari eretgar hnta 1 icetinsda hatt hte odoicnnti or teevn is orem ilykle to cuocr in eth iftrs ".puorg (inwdktitooa/riih_kr/disw:sge/Odiae.p/pt.)

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 +1  upvote downvote
submitted by xw1984(8)
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heT RO in the euprp tlfe 22 tbael si cenotc,rri whhic hslduo eb 6 2(7*/6236 =)6, ton .1 Tsih asnme eth RO of e"at kcioe"so odse tno haengc eftra ttafrinisaocit yb kr"nda ,"ilmk os akd"rn ikm"l is tno a nno,drocuef nad "ate s"okeico si nedyenlntpedi asso /w CEEH .krutaeob

On eth hreto nda,h RO rfo karnd" "lkmi hgdcena a tlo rmfo( 9.3 to ).01, ihwhc dciesatni darkn" lm"ik tgihm be a oocfdnuner a,dn retrh,eeof si ton nnendieetyldp saso w/ EHEc o.eurtbka

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 +0  upvote downvote
submitted by an_improved_me(91)
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A qinetuos i oerm lganlyere veha ...is

sI ti pbliosse htta ewhn uyo rysattfi the ad,ta .e.i( mancgiopr eht efetfc atht taigne oseckoi s,ah ni pelope owh irdkn ilkm ro leppeo owh do tno irnkd )lmik ttah het dsdo otria llwi hosw siinfacgiecn rfo one utb otn the reh?to

adSi fr,ntyifdlee ni teh eampexl ba,voe dulco gteian okecosi in peopel how ikndr likm adle ot a fatiginsnci ciesaner the rkis of cetniof,in but ont in eppeol owh who d'ntid krdni klim?

v'Ie deoklo aurnod ni shti encmmto drehta, and vhea eesn oeelpp onitnme teh retm tc"ffee mfidoitn;ai"oc is atth twha ym aexmepl oevab dlowu h?swo

In erhot os,dwr fi genita oiekcos + ignirkdn kmli ledas ot a itfsiincang kis,r ubt atinge kciesoo + ton inrdgnki lmki sah on ascsdaiote rski, lowdu atht mena that hte kmil has an fftcee" modni"atofici no hte rsik of ttneggi ictifnnoe in oepepl how ate ckso?ioe

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 +0  upvote downvote
submitted by unknown001(9)
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this si a bnuso iet.unoqs

ehwn odsd rtaoi is 1, minange on iosnaas,octi

dsdo ;rti&gaot 1, hwihc in this oqistune si ,6 sname iocssataoni

rehwe si odds atiro ? a) at the eta -cdoontideiko ikdrn mlik lmonc.u cheen het s,newra lyon kciooe tndpeyineednl s.as tihw e lioc

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 +0  upvote downvote
submitted by tyrionwill(22)
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we nca akem ngthsi pemsil ekil hits i w:yaf we wnta ot nokw whehert X,o1r X2 ltorrsacee Y, ew jsut reapesltay tste 1X nad Y, dan X2 dan Y .gnrcaodycil e Whn stte X1 wthi Y, we ueriqre on X2 ;xsoeurpe e Wnh ttse 2X wtih ,Y we erqieur no X1 pu;roesex

We tets eoiokc tihw r,eraadhi ewhn iklm saw tno rkund p(ot :hg)tir evtsoiip We etts mlki whit ,rieharda newh no ocieko saw etaen (weorl igt)h:r teaneigv

uinslc:ocno ynol kceioo otaecerlrs ot eht arerdahi

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 -5  upvote downvote
submitted by lilmonkey(63)
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heT rkewoyd is oNYtNELI.iDcD("TsPEd"aNes)Ea chiWh ni uhnma lgauenag amens "NTO TAEIDC.O"SSA

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I agree it's a poor choice of words but what they mean by "independently" associated is that which of the variable is the only one associated with dz without any confounding.

+1/- peqmd(75)


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