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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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tish stouenqi mksae me ntaw to eta na e lcio iokeoc nda heop i bdlee otu

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caitlyncloy  cipk C dan meov on aws ym rygasett :P ephl lol +2
thegooddoctor2  lol odgo one +1
sparta  OLL anhkt uyo for shti emntcmo +



 +15  upvote downvote
submitted by doodimoodi(74)
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dDi no oen iontec tath eht Osdd irota no eht opt eflt is orw?ng mA I gssniim gnhome?tsi fI oyu aultcealc ti, 'ist 6 jtsu leik teh otp ghrti ..eno..

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mjmejora  htsat ytcaulal rlyael fuynn +
yex  aesBceu I iads o,s ispepla ehr..e. :/- +1
doodimoodi  tanC bvieeel we apy $60 ofr hsit rcpa +50
aisel1787  tseb mmnetco idio)ooddmo +1
b1ackcoffee  that gunkcif werht me ffo on ex.am I wsa elki is rteeh na cffete mooicfinadit yb oN"t indnkgir km.il" the fc!uk +2



 +8  upvote downvote
submitted by sne(59)
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RO t1g;& iiseantdc edsieranc ercnrcoceu of tee.vn ehT ylon RO tergrae thna 1 swa in eth elbat ttah iadcditen atth the ejbutsc eta ksieoco tbu dtn'id dknri mlk.i hTus, that is het ylon eon ihwt a csitaignfni ecccrrenou

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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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rFo leeppo who llyegenar dah btouler girdaen hte two srctah:

Fistr :hatrc eW pasertaed the eenrit tpnpoauiol otni wto arellms louipopastn ot test rfo teh ockseio teffac. In lntoaiuopP A kdn(ra m)lik ereth asw na ddos otira fo 6 top(y in eht cultaa chr)t.a In oPpiloutan B (did ont ikdnr )kmil erteh was na odds orait fo .6 ceniS teh osdd sariot are tno 1, we nca cluecdon ahtt teh eoosick have an fetefc dgrsleaers of het nipopulato (ie nadkr mkli plpeeo ursvse 'ddtin rinkd iklm ep.peol)

neoSdc harc:t Nwe ets of iutplpsnoao ot etst rfo teh ectfef of k.mli nI poaPtloinu C et(a kscoio)e rehet was an ddos artio of .1 nI niPoupoalt D did( tno tea ekosoci) terhe wsa soal na sdod rioat fo 1. Tsih nsame hatt ilkm idd ton heva an tfcfee vere dna tn'idd iuttocnreb to the is.aeeds

"Olyn oiskoec aer tnpddleenyine acetsodisa ihtw .E cloi essc"a esamn atth yoln teh sceokoi auesc het ssieade htiuotw teh csfefet of meoithsgn el.se

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 +7  upvote downvote
submitted by pg32(218)
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hTe atcf ttah teh dosd aotri in eht pto ftle is rnotcicre askem ihst eonutqsi eryv iuitlfdfc. It ekmas ti apraep as fi eth csiekoo rea ustveiaac btu hte limk dha mose veecorptit fato.rc oS uo.bnxisoo

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drpatinoire  God I gtohtuh llaotty eht asme awy as you .idd I drseat at tshi otuseqin rof at ltaes 5imn and sedka elmsyf 'tsawh rwgno hitw ym tistc.iatss +1



 +7  upvote downvote
submitted by youssefa(162)
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lnitaliyI ikml dikrngni asw caitdaseos hwit lcioE. aoubktre iwth R9=.3O nda .0t0&1P;l0 )..ii.Sftia(nngc teArf scianatfttirio into ate oicekso nad did otn tea okoseic RO ecambe 1 idsante of 9.3 eamingn the cstoaoniias par.sidpeade rheer,eofT geanit okcoeis wsa a udnornefco and eetrh is no earl oasstiaonic eewtebn idnirngk mkli adn ad.i..ne.itsolc,.E ksmi'l h(te oocdf)ernnu turntonbiioc asw senslbeirpo fro the RO fo 93. ni hte trsfi lapce. Tish aws eedrrfthu dtonrmsteeda tiwh RO fo 6 in eth cookesi enlao gu.rpo

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 +1  upvote downvote
submitted by sattanki(82)
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Tshi noe hteer wree rouf sodd roi,ats neo eodirpdv edrnu haec .bteal Teh lyno oen htat hda an ddso tioar erterag hatn 0.1 saw the laebt in hte pot hgitr (Odsd taRio = 6, I b,i)elvee chwhi newh uoy oekdlo at eth elas,lb dle ot the gtrih aewr.ns

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 +1  upvote downvote
submitted by famylife(110)
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An" sddo aotir fo 1 edantisic hatt het iocinnotd or nvtee runde uysdt is aulqley iklyel to urocc ni boht .upsorg nA sddo riota rereatg thna 1 sniciadet thta eht ointoicdn ro envte si meor ikylel ot ucorc ni eht istrf "o.grpu (etspwri/k_gdtrip/:.oianeiad/isw.kith/Ood)

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 +1  upvote downvote
submitted by xw1984(8)
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eTh RO in hte pepru tlfe 22 tbale is crrct,onei cihhw shdolu be 6 27(2/6*63 6),= tno .1 ishT amsen teh RO of eta" oke"sioc edso tno enhcga afrte afaitrosctniit by dr"akn ,lkmi" os radn"k i"mlk is nto a cn,uodefonr adn t"ae sieo"koc si tnndleinpeyde soas w/ CEHE uot.ebkar

nO eth rehot hd,an OR for "andkr lm"ik gnaedhc a otl rf(om .93 ot ),01. hcihw cidtsniea dnka"r mikl" thgmi eb a foenodrcnu nda, fte,oerehr is nto eennpldedntyi asos w/ cEEH b.auterok

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 +0  upvote downvote
submitted by an_improved_me(91)
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A sutoineq i orem gelrnayel eavh ...si

Is ti ipolesbs htat hnwe yuo tiafytsr the dtaa, .i(.e igpcranom eht tfecef ttah anetgi skeiooc sah, in peeplo woh krdni milk or eeppol hwo do ton kdnri mi)lk tath eht dods aotri will swoh nnsafeigicci ofr eno btu tno teh ethro?

daSi eynf,ritdfel in het mapexle ,bevao duocl itnega cskieoo in oepepl ohw rknid ilkm deal to a aiisncitnfg nscierea teh iskr fo eci,itonnf btu tno ni epolep who ohw 'tdidn nirkd mkli?

veI' doloek dnroau ni tihs momntec d,trahe dna aveh seen epepol inmtnoe eth tmre ete"cff afoin;t"imcido is that hwta my mplaeex oabev owlud hso?w

In hroet rds,wo if neatgi cooiesk + dnnriikg iklm sldea to a nicigntisaf ,irks ubt iengta seocoik + otn ngikrnid mkil has no otsiaeacsd irk,s duwlo htta amne ttah teh klim sah na "ftecef i"toicinadomf on the ksir of gtntgie noiticnef in opplee owh eat s?kceooi

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 +0  upvote downvote
submitted by unknown001(9)
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ihst si a bosnu si.qetonu

wehn sddo atior is ,1 iannmge no cososaiti,an

dods &rtati;go ,1 ciwhh ni ihst uoteqnis si ,6 masne ianctsoosai

ewrhe is odds tirao ? a) at teh ate ekoi-tndoocdi idnrk ikml locm.un ehenc eht saerw,n loyn oikceo ynnenedidpelt sa.s twih e lcio

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 +0  upvote downvote
submitted by tyrionwill(22)
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we acn make gthnis eispml lkei htsi fyaw: i we watn ot nowk eterwhh rXo1, 2X relcortaes ,Y we tsju slrepteaay ttse 1X and ,Y nad X2 dna Y acnr.cdoiygl he Wn ttes X1 thwi Y, we iequrre no 2X reouse;xp Wnhe tste X2 iwht ,Y ew qruerei on X1 es;reopux

We stte kiooec tihw dh,iraare wnhe mlki was otn krnud (tpo thr:ig) eitsviop eW sett mlki hwti ,aradehir ehwn on keioco wsa aeten e(lrwo )gi:trh ieeatnvg

cons:lcionu nyol ioocek selcrtroea ot hte ridraaeh

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 -5  upvote downvote
submitted by lilmonkey(63)
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Teh yeowkrd is L.ENiDE"aaEseo)PsdcNT"tYD(IN hWich in mauhn ngeagual mnase ONT" ASID"TESO.CA

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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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