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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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shit sqonuite sakme em nwta ot eat na e ocli ocieok and hoep i ledbe out

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caitlyncloy  pkic C and vmoe on swa ym tygtares :P elhp lol +2
thegooddoctor2  lol odgo eno +1
sparta  LOL nhakt oyu for hsit tcmomne +



 +15  upvote downvote
submitted by doodimoodi(74)
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iDd no one cnetoi hatt eht dsdO atori no teh tpo elft si wrgo?n mA I sgsniim g?iohmestn If ouy ecallactu ti, 'tis 6 tujs liek het top gihrt ...on.e

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mjmejora  sthta yllacaut lyaelr uynfn +
yex  seecBau I aids ,os ppilsae ...ehre /-: +1
doodimoodi  nCta vebiele ew ayp $60 fro hsti rcap +50
aisel1787  sbet omtemcn diooodmd)io +1
b1ackcoffee  atht ignfukc trhew em ffo no em.ax I was klei is eterh an effect dfiitinacomo by N"to rikndgin klm"i. the !fuck +2



 +8  upvote downvote
submitted by sne(59)
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RO 1;> ancdiseit nrdesaice oeccurrnce fo tnev.e The olny OR aetgrre athn 1 was in teh etlab ahtt ecnitdaid that teh cjtsbeu tae oekiosc utb ndidt' drnki lm.ik huT,s taht si teh ynol eon ithw a aniitgnfcis ourccneerc

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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 oleppe who nlgeerayl hda bteluor daneigr het wto sctr:ha

itsFr c:hatr eW atpsdeaer teh etiern pponutolai otni two almesrl alopsoiptnu ot estt rof the oikseoc .aectff In oiotulPnap A krdan( ikl)m three saw na dosd trioa of 6 (yotp in eth cautal crha)t. In tlponPouia B (idd otn ndrik lkm)i ehter wsa na osdd oatir fo .6 eciSn teh ddos rsoiat are not ,1 ew can doclcneu atht het koicose ehva na eteffc gdsrserlea fo eth otnulipopa (ie darnk kmil oeelpp ssuvre di'dtn rnidk klim eoeplp).

decnSo rath:c wNe ets fo aplouitpsno ot stte orf het fetcfe of lmki. In utPnoiopal C e(at ek)ooics ereht asw an osdd irtao fo .1 In lnPoutopia D d(id ont ate kosc)ieo rthee wsa laos na ddos irtoa fo 1. ihTs nasem htta mikl idd ont vahe an ecefft evre dan 'tdndi tbctruneio to het d.aieses

ynlO" ocoseik are nneiyplteednd teaidaoscs whit .E ciol saecs" amnse thta noly hte ksooeic cueas the dasiese ouwhitt the fecseft of htmensoig e.les

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 +7  upvote downvote
submitted by pg32(218)
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ehT caft ahtt the dsod itora ni the tpo fetl si rorecntci keasm shti iensqotu evry ic.idlufft It eaksm it paerpa sa if hte ooicske rae ctauvasei btu the kmli dha mseo teoecpitrv .trafoc oS xiouonbos.

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drpatinoire  God I guhhtto lltoayt het meas yaw as you .idd I taresd at iths iueosnqt rfo ta slaet 5nim and dakes fymles hsawt' ognrw with ym sttiti.ascs +1



 +7  upvote downvote
submitted by youssefa(162)
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Iinltylia kmil dkgnriin wsa aeoscstdai ihwt ciEl.o erakubto thwi OR=9.3 nda 0l0.;&t1P0 )t(..ninfg.iiSca efrAt aistcrintiotaf otin tea kcesooi dan did ont eat oiekosc RO abecem 1 iesandt fo 9.3 mnaegin teh asicnioaots eeda.idprpsa eofrhTre,e aginte oskeioc saw a doufrecnon nda reeth is on alre ssotacoaini nwtbeee inginrdk kiml nad .an.Eid..oi,.lscte ilks'm the( o)ucfnneodr tuotbnricion wsa boissneplre orf hte OR of 93. in eth fsitr p.elca ishT aws rfeedhurt anrsttdemdeo tihw RO fo 6 ni teh eskocio neoal guo.pr

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 +1  upvote downvote
submitted by sattanki(82)
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hTis neo rthee rewe uofr dsdo i,toras eno odrpevdi drune caeh bla.et eTh lnyo neo atht dah an dsdo traio reegatr anth .01 saw eht talbe in eth otp grtih (ddsO toiaR = 6, I lve,ee)bi wchih enhw you odlkeo at eht ,alebls eld ot teh itrgh eswanr.

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 +1  upvote downvote
submitted by famylife(110)
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n"A odds toria fo 1 iteinscad hatt eth ioocdtinn ro tvnee rdneu tsydu is aeuyllq lekyli to courc in htob r.usgpo An dosd rioat grareet hnta 1 tediaicns atht teh idniotocn ro eetvn is oerm kyleil ot coruc ni eht itrsf uopr."g (ei:grw.sakd/wikdinsidooea/pt_h/irtO.t/ip)

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 +1  upvote downvote
submitted by xw1984(8)
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heT RO in hte ppure fetl 22 teabl si eirc,notcr ichhw ludhos be 6 72(63*6/2 )6,= tno .1 hsTi enasm eth RO fo "eta ciooske" eosd ont gaecnh eraft ttocinfraatiis yb kd"nra ",kmli so "ndrak kim"l si ton a odcfonre,un nda eat" "oisckoe si dnetneepnldiy ossa w/ HCEE ok.rbetau

nO the roeth ahdn, RO fro nkdra" mik"l eahgdcn a tlo for(m .93 to ,1.)0 hiwch taidncsie anr"dk m"lik htigm be a ofnouecnrd and, ,efrortehe si ont nyeldndpetein osas /w EHEc artbkuo.e

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 +0  upvote downvote
submitted by an_improved_me(91)
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A etiqosnu i moer engelryla vhea si...

sI ti bposseli htta hwen yuo tayfstri the at,da .i(e. rmgoicanp teh efftce that gtnaei ooicesk a,sh ni eelppo ohw rndki mikl ro peolep how od ont dnkir m)lki thta eht ddos raoti wlil hwos eisicagfnnci rof one utb otn the rohte?

idSa yrdnfei,ltfe in het aempexl beaov, codlu atengi ociseok in epleop who kridn lmki dlea to a itasnigcfni earenics teh ksir fo cnnie,ifot tub nto ni eeplpo woh owh d'intd ikrdn ?kmli

'eIv odekol noduar in hits etmocmn th,rdae dna heva eens ppeloe nnietmo hte trme tfceef" tc;ianoo"idfim is ahtt atwh ym axlpeme aovbe olwdu s?owh

nI toreh ,wrsdo fi tangei kisoeco + ndgkriin mkil deasl ot a nfgisinatic s,rik tub tgaien esiocko + nto iirndgnk kilm sah no sdectaoais i,skr dolwu atht enam ttah hte iklm has an tcee"ff mociidoi"tfan on teh sirk of ntteggi onftnicie ni peelpo woh tea ocseiko?

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 +0  upvote downvote
submitted by unknown001(9)
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this is a ounbs n.teqious

wehn osdd ratoi si 1, ngeimna on sstaiianc,oo

dods iaorg&tt; ,1 hhwic ni hsti noqieuts si 6, nesam iassanoctio

reewh is dosd raiot ? )a ta the ate e-oocokntiddi rkdin kmil ucn.mol echne eht ,nsewar nloy cookei nepidlneedynt ss.a wthi e ocli

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 +0  upvote downvote
submitted by tyrionwill(22)
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ew nca aemk nhigts pmseil ekli ihst iayfw: we nwat to nokw ewherth oXr,1 X2 eoarlectsr ,Y ew ujst tspaeaelyr tset 1X nad Y, nad 2X and Y gnccao.dyilr n Weh stte X1 wthi ,Y ew eiuqrre on X2 xo;ureesp Wenh estt 2X ihwt Y, we urireeq no 1X ;uexersop

We tset oioeck twih rrdaehai, nwhe ilmk aws ont urdkn to(p )rtih:g tpiovise We tset lmik twhi ardheir,a hwne no ceoiko asw aente erlwo( grti:)h ivganete

clc:sunooni ynol ikeoco lcroesreat ot het harearid

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 -5  upvote downvote
submitted by lilmonkey(63)
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hTe wdeyokr is TidLacoNEN)tIsP(Y""DNEsE.aDe cihhW ni umhan naleugga nmsea "NOT ".DSAAECSOTI

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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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