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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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hsti nisuoeqt ksmea em atwn to aet an e ciol kcoeoi nda oehp i bedle uot

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caitlyncloy  pcki C nad vome no swa ym gaystret P: hlpe oll +2
thegooddoctor2  lol oodg eon +1
sparta  LLO hntak ouy for tihs nemctom +



 +15  upvote downvote
submitted by doodimoodi(74)
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Did no one tcnoei ahtt eth dOds aoirt no hte pot ftel si ro?nwg Am I smiinsg gh?iostnem fI yuo laatclceu i,t i'ts 6 tjsu elki the opt trgih n..e..o

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mjmejora  atths altcauyl raeyll ynfnu +
yex  Bsaecue I dsia ,so alespip e.he.r. /:- +1
doodimoodi  taCn eilebev ew pay 6$0 fro siht apcr +50
aisel1787  bets cnemmto doddooioim) +1
b1ackcoffee  hatt fucknig ehrtw me fof on mxae. I wsa keli si eehrt na efecft odmfoiinctai yb oN"t knidnigr kl".im het cufk! +2



 +8  upvote downvote
submitted by sne(59)
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OR gt;&1 inicsaetd snidecaer crencercou of evnet. ehT nylo RO eregtar nhat 1 was ni eth etlba atht dianidect hatt teh teuscjb ate ckisooe tbu dnt'di irkdn mkli. ,suhT htta is teh nyol eon htiw a nintaifiscg ecccrunero

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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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Fro oplpee ohw enrglleay dha btuerlo gdaerni hte wot srth:ac

iFtrs arthc: eW rpeadeast hte ternie ouopnilpat noit wot ellrmas soipalpuotn to stte rfo hte ksoieoc eaftcf. nI atlPopniuo A nrd(ak )likm etrhe wsa na ddso tirao of 6 typo( ni the ulatca aht)r.c nI iPuolanpot B ddi( tno ridnk l)mki trehe was na ddos raoit fo 6. ceSin het odds tirsao rea not 1, we cna cdlnuceo atht eht kcsoioe ahev an etfefc dgersasrel fo eht olpuatopni ie( ndrak ikml epolpe uevrss d'dnit kdnri kilm .el)oepp

Scneod r:tahc ewN ste fo autplospnoi to estt orf the efetfc fo .milk nI laitnPpouo C (tae )ookiesc erteh saw an dods atrio of .1 In liPaooptnu D di(d tno tea oo)eicsk eethr was saol na dsod oairt fo 1. This emnas that ikml idd not vhea na ctefef evre adn 'ditnd cotuteribn to teh eesa.sid

l"nyO okciseo rae deepdtnnlyein aodetssaci wtih .E oicl secsa" senam that ynlo teh iekocos suaec teh sisaeed owtuith eth ftcfees fo igoetsnmh s.eel

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 +7  upvote downvote
submitted by pg32(218)
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hTe fatc hatt hte odsd ritoa in eht opt etfl is ercritcon smkae sith qiesnout eyrv tc.fiidluf tI kmeas it aperpa as fi the iceosok era aeaticusv tub eth ilkm had emos toepvitcer .fotrac So oouisbo.xn

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drpatinoire  oGd I ugtohht oatllty the seam yaw sa uyo dd.i I atdrse ta isth sqtuoeni orf at ltsea i5mn nad ekads syflme hw'sat gwnro wtih my itcstts.sia +1



 +7  upvote downvote
submitted by youssefa(162)
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Ilitainyl mlik nnikdirg swa aisotdceas hitw ocil.E brkutaoe ihwt O=3R9. nda &0l0t10P.; .n)tini..aSfci(g rftAe oatfrttcsianii tnoi eta coosiek and ddi nto aet iookcse RO eebcam 1 ientads of 39. enimgna eth oaicainssto aerspipdea.d errfoeh,Te agtien koecios swa a oouecfrnnd dna etreh is on lear scisotinaoa wetenbe rngdikin kilm dan .e.tns.loEci.a,di. sk'mli et(h erfund)nooc biocnutoritn wsa isbnosrlepe fro eth OR of .93 in hte fsrit aplc.e Tshi swa fhetrurde teosdatenrmd htiw OR of 6 in teh iockeos elnao o.pugr

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 +1  upvote downvote
submitted by sattanki(82)
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Tish eon ether ewre rufo ddos sritao, one pdiervdo unerd chea abel.t Teh ynol oen atht dah na osdd roati aeegrtr nhat 0.1 was the labet ni hte top igrht (Odsd itoaR = 6, I b,elevie) ciwhh when oyu ookeld ta teh a,bells led to eht grhit srnwea.

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 +1  upvote downvote
submitted by famylife(110)
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A"n odsd taior fo 1 tasiedicn ttah eth tiindocno or evnte dneur dusty is yulalqe ieklyl ot ruocc in tboh .sgupro An odsd tiaro rtgeaer tnah 1 eansctdii htat hte dnioioctn or entve si omer lklyei to uoccr ni teh rsfit og.r"up (khridadt.wotwai/esosOn/i/rkdiiitg_/pp:e.)

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 +1  upvote downvote
submitted by xw1984(8)
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ehT OR in the urppe flte 22 tbale is iror,tcenc chihw doshul eb 6 2(76*362/ )6=, not 1. This esmna eth RO fo ea"t kscoe"io deso otn cgnhea tfear fratsaiotintic yb k"radn mk"li, os ndkar" ml"ik is ton a rcun,eodfno dan a"et "cikooes si epdnednlynite saos /w ECHE br.kaeuot

nO teh hoert and,h RO for kdra"n kmi"l heagncd a tlo (morf 9.3 ot 0)1., hciwh dcaisntie r"dank "imlk mtigh eb a recuoondnf ,dan ero,erfeth si not edpynetldeinn soas w/ cEEH ar.ekobut

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 +0  upvote downvote
submitted by an_improved_me(91)
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A uqiosten i orme neglyaerl hvea .i..s

Is ti spsoeibl htat wnhe oyu tfstariy eth a,dta ..i(e rimcaogpn the fcteef atht naigte isooeck sh,a ni popele ohw idrkn kmil or polpee who od nto dnirk milk) that eth odsd aitor will sowh nfieccngiisa rfo noe btu otn eht rteh?o

aidS dly,ftneiref in eth malxepe bv,aoe cudlo iaegtn cioeosk in oeplep who rndik ilkm eald to a fnsigacinit nirsecea eht kris of fctneioin, tub ton in oplepe how who dtndi' ikndr mk?li

v'eI oldeok doruan ni shti nmcmote rda,teh and aevh eens eelopp oemnnti het mtre ctfe"fe mdoioii;ftcna" si thta wath ym lmepxae obeva luowd h?wos

nI ethro osrd,w if eaintg oskceio + knrigdni mikl selad ot a atisnginicf i,srk but naiteg oiksoec + otn nngridki kiml ahs on tscsiodaae riks, wludo atht maen thta the mkil hsa na ctf"efe o"acidnfmitoi no het srki fo iggetnt fitoiencn ni peloep ohw ate iskce?oo

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 +0  upvote downvote
submitted by unknown001(9)
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hsit si a bosun oq.uinste

hnew ddso ratoi is ,1 mnniega on aiiast,soocn

sdod toirgt;&a ,1 hihcw in hits teiqnosu is 6, menas ataosniscoi

whree si osdd itaro ? a) ta eht ate incdoieo-otkd kirdn ilkm .colnmu heenc eht reswn,a lnyo eikoco entyilndpneed sa.s itwh e cloi

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 +0  upvote downvote
submitted by tyrionwill(22)
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we acn ekam istgnh spmiel ilke hist y:wai f ew awnt to onwk therwhe ro1,X 2X lrsrtceeoa Y, we utsj earayltpes stte X1 adn ,Y dna 2X dan Y cacliydgn.ro ne hW estt X1 hitw Y, ew eurqrie on 2X ee;oxprsu h eWn ttse 2X tihw ,Y ew eriuqre on 1X rp;eusoex

eW sett ecokoi hitw ireahda,r wnhe mlik saw otn krdnu pot( h)gtir: piesotiv e W sett lmik ihtw d,rirahae ehwn no ioekco swa ateen (elrow )rthgi: eaingtev

:nosloincuc nylo ceiook acreestrol ot hte arhediar

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 -5  upvote downvote
submitted by lilmonkey(63)
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Teh kdeywro is EDtP("LEYeaIEToNN.d"a)icDssN ihhcW ni hnuam luagaeng msaen T"ON OTDSC"ASIAE.

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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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