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Retired NBME 24 Answers

nbme24/Block 1/Question#15 (reveal difficulty score)
Results of a 5-year screening program for HIV ...
5% 🔍 / 📺 / 🌳 / 📖
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submitted by youssefa(162)
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oS mbuern fo esasc tihw tvsiiope oyglroes ringdu kei""tna pnesterres nepclrevae dna lhudso ton eb cudeocatn for hwne cltacauling inpoutoapl ta rsik. Potilnapuo ta kirs = oTatl paooultipn - pleerec.anv Digon ,thta usm pu the ulnnaa seidicncen felt = 400 + 052 + 250 + 003 + 003 = .0105

gAipylpn dencecini raolmuf = ,)4010-00/0(000150 = .250 ovre a lttao of 5 ar.sey

nuaAln = /50.52 = 0.5%0

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submitted by karljeon(140)
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I on'td oknw if hrtee is na nueqoita for it,hs utb I scilaaylb edppmu uot veyer sniviodi caosrs teh ltbae ot teg ~%5 on gevreaa.

Here ythe ea04:0r / 000,6 = 567020 0. / ,0560 = 50.00043 / ,5053 = 0036 500. / 50,50 = 20500 9.5 / ,0804 = 2.500

Teh aaveger fo tsehe %s rfo lla het sarey = S8 .5o5.% hast't lscoe ehunog to %5.

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seagull  dogo .rowk I ofdun htis usotieqn gnionyan dan aevg pu gonid seoth esroicdnnig het umtnoa fo iemt we era ngevi. +4
vshummy  Wlel tusj dno’t lneduci the atienk r..eya. besaecu that semeds em u.p. +17
_yeetmasterflex  woH udwlo we ahev ownkn nto ot cndeliu eht tknaie r?eay mrFo greaeav nlaa***n*u inec?edcin +
lamhtu  Do not undielc aetkin ryea eeabusc eht suteniqo stem is agniks raevage lnuaan c.ecdienni Teh 0040 toipisevs ta itkane clduo vhea aecrqudi HIV verenweh, ont stuj ni eth atsl r.eya +9
neels11  illtraeyl 'iddnt thkni hrete aws na ctaual way ot efurig ihts uut .bto my ouhhttg espsocr w:sa oyak nceeciind mnase NWE sesa.c os hte annaul avreaeg ta het dne fo 5 rsyae dulwo eb: #( fo EWN pleeop taht tesdte itievspo at het nde fo reay )5 /( # fo leeppo at atth weer at iskr ta eth ingngeibn fo yaer 5) l&t-;-- aka ta teh nde of yaer 5/0 520045 = %54.9 alos if uyo oklo at ryae :5 y'olul see atht het at isrk iuolpanopt is 0804 hnew 300 enw sasce weer dnufo het arey b.rfeoe 5050 ta the ned fo arye 4 UMSIN eht 300 ewn csesa ta the nde of eray 4 usdhlo gvei uyo 5740 as eth enw tonpploaui ta .skri ubt tinoce htta den fo eayr 5 we vhea 004.8 ikd if htat emnsa 50 olpeep rewe felas etoiispsv oberfe ro 05 poepel reew dddae tub in eeindicnc hsti/ctbrtheead/ td'no istm'eat tr dnik of kile LDWORU DI 1.702 nssgimua avegaer naulan nncieidce si eth msea sa uaitculvme decicnine hits asw just a hubnc fo orwd .oimvt rysor fi it saw nlebareaub to lfowlo +

A related discussion (on a question from NBME 21) is here: https://nbmeanswers.com/exam/nbme21/714

+2/- csalib2(4)

The quickest way to do this is to add all the numerator ... = 1500. Then Divide by both year and susceptible population =1500 / (5*6000) = 5%.

+2/- peqmd(75)

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submitted by jotajota94(14)
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dcieicenn = rmubne of nwe ecs/sa enw a+ssec ptualpioon ta .isrk new cess=a 250. eepoPl ta sirk atth ayer 0550 ligdu(innc ewn c.asse In one ipnot teyh weer a apotpolinu at i)ksr 520/ 5500= 49%.

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submitted by felxordigitorum(12)
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ecuxlEd eht nateik eray. ddA lla eht ptosviie luersts 045300000+++0230(52+ = 500)1. evdiDi 5100 by het tloat bumern fo itptanes orfm teh tastr fo the nincieecd eopr,di erya 1, so 0006 -g-;t-& .2,006=15050/00 sthi si het veaarge srcsoa lal 5 .esyar For nl,auan iddive 2.50 yb eht rnubme fo asrey, 5 &g;t-- 525/0. = 5.00 --tg&; %5.

ha'sTt who I gto it.

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submitted by sabistonsurgery(5)
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ndcciIeen si ylctialyp ulaleadctc sa a umenrb sedsiaed erp exepdos ooanipltup epr uint ,mite lalysuu .yrae roF ehac ya,re divdie eht epople fu,dno by teh eeoplp .pedsoex uYo rveiar at eusgfri fr caeh raye geinb ,4% 5% dna 6,% vareega gbine .%5

Q: hyW otn ctnou antiek yrea rfo cwhih eht iecnnicde smese to be 4?0%

s:An So sta'ht hte trkic of hte qui.ntose IT sseem to iymlp eth keatni yare laso hsa 0400 wne c,eass tub htsi ns'it dci,ninece tsih si preavleenc! Wtah ehpndaep ehre aws htta hte tlanopipou of 0010,0 aws nto ignbe cderesen rfo ADSI. ehTn yuo arettds teh gsrneenic mro.agpr

caylylTpi ni nya nnresceig rmga,rop yuo wlli shteaslbi hte naeeslbi enlprecvea fo the asdeeis yb ntsteig lla fo eht ngeealr ao.upiltopn You fndi 0040 wen ,ascse btu ehste reew stju utcndteeed .ecsas ouY elxudec thme mrof oyur ogninmio.rt rFo teh txen e,ayr you ekpe a ahtwc no eht 0060 l,tfe fo wihhc 400 eedplov DAI.S You aetlclauc ncdciiene rfo sith eayr as 6%.7 nda luxedec teehs 400 mfor eht txen arye nda os no.

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submitted by sweetsummerblowout(0)
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setmteta.o/sn1:tt-sost0a/uahcsdltrt/1pesdtsl-itp1ar/i1/ephce1re0hms.bos-ly

hTe artch on tshi eits hossw ropeute/hap/aewTlr/ba cr(iege.c)veontatr s Tih iseuontq sksa lhldkooeii" of nmsisig na csniati"soao - hwcih sblyaical emnas wath is hte sfael visoitep tre,a cihwh si the nofeiidnit fo T/plpeahay I r.rero usoiQnte emst tsseat ,5=pah00al. hwcih is 5.%

taeB si pTye II erro,r and owuld be 10% els(af een.vgtia) %09 uolwd eb Porew at)1b(e-

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submitted by guillo12(58)
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I todn' wnok eth nueqtiao fro ti,hs ubt I did t:his The smu of ceinncide erp ea/ry eht mus of eurbmn aiarnemig ni olpinoau.pt o.S.. /,8120008,05 = .08520 or 5%2.

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