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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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isht sitquneo aemks me nwat ot tea na e lcio ocieko adn ophe i leedb tuo

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caitlyncloy  pikc C and emvo on saw my ytrsatge P: phel oll +2
thegooddoctor2  lol ogdo eon +1
sparta  LOL ahntk uoy rof tsih eonmmct +


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 +15  upvote downvote
submitted by ∗doodimoodi(74)
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Did on eno ncieto ttha the ddsO otari on the opt ftle is w?ognr mA I gnsmiis eso?gtihmn If uyo claalecut ,it sit' 6 tusj ekli het pto hrgit n...e.o

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mjmejora  atths llacyatu ylaler nnyuf +
yex  eecusaB I idsa ,os aleipps ...heer /-: +1
doodimoodi  Catn ievlebe we ypa 60$ rof ihts cpra +50
aisel1787  esbt nctmoem )ddoooiimdo +1
b1ackcoffee  that ncufgki rtewh me ffo no eam.x I was ekil si eerht an feefct iaoimdocfnit by Nto" gndirink im."lk het uc!kf +2


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 +8  upvote downvote
submitted by ∗sne(59)
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RO g1t&; ascidtein cinseadre encurcroec of nevte. heT lyno RO rrtegae hant 1 swa ni eth eltab htta dtadecnii thta hte suebtcj eat kooceis btu d'dtni dknir kil.m shT,u taht is eht onyl eon whit a gniicnfsita onrccuceer

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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)

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 +8  upvote downvote
submitted by ∗qiss(20)
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For ppeloe who aglryeeln had teubrlo egdianr the two a:tchrs

istFr t:hrac We etapaedsr the itrene popolnitau toin two learmls opltianpuso to stte orf hte cosoiek ef.acft nI pontuiPloa A (adrnk k)lim etehr wsa na dosd tiaro fo 6 pt(oy ni the atcula ar)ht.c nI ilaPpnootu B i(dd otn indrk mkli) trehe asw na dsod aorti of 6. ecinS hte dsod rsoait are ont 1, ew can ecnloduc ahtt teh oeoiksc vhea na tceeff dserrslaeg fo eht paulooinpt (ei raknd mikl opeelp vseusr d'tind idrkn limk ee)pl.po

Snedoc :htacr New ets fo uonliaspotp ot ttse fro hte cfteef of kim.l In oloPiunpat C (ate koeos)ic hrtee saw an odsd rtiao fo 1. nI ltopunPaoi D i(dd ont tea oks)oeci ereht wsa losa na odds itaro fo .1 ihTs sname atht likm ddi tno have na eefcft evre dna idt'dn cntiteubor ot het seedasi.

O"lyn ioeocsk rae ndtedeeynnipl oaiassetcd iwth E. loic "sscae esnam ttha ylon eht skieoco uceas het eidseas houittw eht ftsefec of itshnmoge l.see

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 +7  upvote downvote
submitted by ∗pg32(218)
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heT acft tath het odsd itaor ni eht pot flet si ircorectn kseam sith unteisoq eryv cudiiflft. It kames ti papare sa fi eht osekcoi era tuvasaiec ubt eth imlk adh esom cteteiprov ftrcao. oS box.uoosin

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drpatinoire  oGd I htughto oalltty the asem yaw as yuo d.di I tredas ta sthi otisquen orf at tleas i5nm nda eskda smleyf whst'a gwnro ihwt ym tscsi.ttasi +1


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 +7  upvote downvote
submitted by ∗youssefa(162)
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lIytlanii ilkm rnkdnigi was oastisacde twhi .iolEc oautrkbe ithw 9.=RO3 dan 01.P0l0&t; ngi.i.ft.)aSi(nc ftreA naitoirsaictft onit eta cisooek nda did ton tea socokie OR emcabe 1 etsadin of .93 neagimn hte ncsoiiasoat ap.esipeddra hfoeeeTrr, egnati skocoei was a ruoenfcndo nad rthee si no arle oiasonitcas eewntbe ndgiiknr kiml nad .c..,.nl.isoteaEdi 'kmlsi te(h foonnecd)ru ointictborun aws plnsroseieb ofr eth OR fo 9.3 in eht rfsit pe.acl isTh aws ertrdfheu tredstemanod tiwh RO of 6 ni eth ekisooc neola oug.pr

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 +1  upvote downvote
submitted by ∗sattanki(82)
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ihTs one eehtr were oruf sddo ,rostai eon dopirevd rednu ehac tbea.l hTe nloy neo ttah adh an osdd aitor areetrg athn 10. asw het tlbea ni eth otp rgiht (Odsd atoiR = 6, I viebe)el, which nweh uoy deloko ta eth b,aslel lde to the grtih .enswra

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 +1  upvote downvote
submitted by ∗famylife(110)
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"nA sdod roait fo 1 cedsaniti ttha teh diioncotn ro venet uendr ytuds is aeqully leliyk to rcuco in htob porsg.u An odds roita rtegrae hant 1 antcisedi atht hte donnctiio or teven si omre lykile to ocucr ni hte rtfsi .or"upg (widieii.a/tssOo:driweignkka/htd/p_.t/pro)

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 +1  upvote downvote
submitted by xw1984(8)
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eTh RO in het pperu tefl 22 eblta si ceircont,r cihhw udhslo be 6 (72/66*23 ),=6 ton .1 hsiT manes the OR of "aet sookc"ie sedo not ehagcn faetr acsaofirnittti yb drnak" i,m"kl os dkrn"a "kiml si nto a crfn,euodon nda eat" eo"cokis is dtnpldneieeny oass /w EEHC rekao.btu

On eth oethr d,nah RO rof nrk"da mlk"i hacdgen a lot m(ofr 39. ot 10,.) ichwh niesadtci nard"k lm"ki hmtig be a dnncroeouf d,na eteore,hrf is otn tileeynendpnd oass w/ cEEH utkeb.ora

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 +0  upvote downvote
submitted by ∗an_improved_me(91)
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A eisqtuno i omer eryeanlgl vhae i.s..

sI ti peioblss taht hewn uyo ftiasyrt het ad,ta ei.(. rcnapigom het ecetff htat aigetn ikescoo ,ash ni eopepl owh ikdrn iklm ro eoppel how od tno rdnki ilm)k tath teh sddo orati illw owhs icnnifsicega ofr eon btu tno eht trheo?

aidS nrlef,dtyeif in eht eemplax vaeo,b dlcou iengat ckoieos in loeepp who rdikn kmli laed ot a iniatcnfgsi naersiec teh irsk fo niteco,fin btu otn in opleep woh owh intdd' drnki ?kmil

evI' dekolo ruando in htis emmncto drta,eh and aehv nsee eeplop nonmite eth trme effcet" idfmoa;ic"toin is ahtt athw my xapelem veoba dwluo hwos?

In rhtoe row,sd fi eintag oekciso + kiindngr klim eslad to a naftgciniis k,ris tub ntaegi oksicoe + nto ngidkirn mlik sah no atasedcosi si,kr wodlu htat anem that hte imkl hsa na ftcefe" cfi"adimotion no hte risk of ietgtng cieintonf in peeplo how eta ks?ceioo

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 +0  upvote downvote
submitted by ∗unknown001(9)
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thsi si a sonbu ino.tusqe

nwhe ddso triao si ,1 nnemgia on aitssoacoi,n

sodd ariot;t&g 1, hwhci ni tsih nuisqoet si 6, eamns ictaisosnao

ewerh is dosd trioa ? a) ta het tae itikocne-oddo rdnki imkl clmu.no nhece hte n,arsew ylno oekoci ydiptlnedneen s.sa thwi e oilc

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 +0  upvote downvote
submitted by ∗tyrionwill(22)
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ew nca mkea nhsgti spmlei ilek tshi i:ywfa ew tnaw to ownk ewhrteh r1Xo, 2X slratceore Y, we tjus paalerteys tste X1 adn Y, dan X2 nda Y ncodr.gyacil neh W tste X1 whti ,Y we eruireq no 2X pxoesre;u eh Wn tets 2X hiwt Y, we eqieurr no X1 erepou;sx

We ttse oickeo ihtw eriardah, ehwn klim was not rnkud (pto )trg:hi psiitoev W e estt klim thwi ,iarerdah nweh no oiecok saw taene oelwr( gt)ri:h itnvaeeg

:cnoscuilno ylno ecioko socratleer ot the rhadirae

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 -5  upvote downvote
submitted by ∗lilmonkey(63)
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eTh rkydoew si aasNi")"PL.cYNETsdDIDNe(EtoE icWhh in umnah gneuagla esmna OT"N OA"IE.CTSDSA

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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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