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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 mbunre of assce thiw eiiostvp oglyeros gdruni "tiake"n stresenepr vprlcaenee dan hodusl tno eb eccotandu for nweh aallituncgc tlioponaup ta i.rsk iPotnlpuoa at riks = Talto aoitopunlp - eapenrvec.l niogD t,hta smu pu teh unlaan icsncndiee flet = 004 + 052 + 052 + 300 + 030 = 0501.

yAgplinp ceiecdinn aormulf = 0001000/-500(4,0)1 = 50.2 reov a laott of 5 ar.esy

lAunna = 0/25.5 = %005.

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 +8  upvote downvote
submitted by ∗karljeon(140)
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I no'td nkwo if rthee is na qnaeituo orf ts,ih but I liabcalsy mdppue uto evyre vsoidiin oscsar het taebl to etg ~%5 no revae.ag

reHe teyh 4:era0 0 / 060,0 = 05 6700.2 / 065,0 = .0 003540 / 0,535 = 0000. 653 / 55,00 = 55902 .00 / ,0840 = .2050

Teh veregaa fo steeh %s rfo all eht ysare = 5 %S5..o8 h'tsat soelc euhnog ot 5%.

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seagull  gdoo rwko. I dnufo hsit qeositun aiyongnn dan evag pu dingo sehto isnegidronc het namtou of mtei we are gve.ni +4
vshummy  lWel jtsu ’dnot dluicen het nkiaet are...y eacsbeu that esdmse em .up. +17
_yeetmasterflex  Hwo uwldo we evah onwkn nto ot uldeicn the kinaet e?ayr Fmro avgeear *n*uan*al* incd?neeci +
lamhtu  Do ton ediulcn eaktni eray cbeusae eht tniosqeu tsem si nsigak reeagva alnuna .ediieccnn Teh 4000 tsoepsvii at etaikn lodcu evah aqcridue IVH enh,evwer nto ustj ni teh aslt a.yre +9
neels11  ltllyriea ntddi' inkht eerht asw na cuaalt yaw ot fgeiru sthi tu btou. my uhghott ossercp :asw okya iccennide emnas WEN assce. os eht nunala everaga at eht dne of 5 eayrs udlwo b:e #( fo EWN eppeol hatt teteds isvetoip at het den of eayr 5) # /( of olpepe ta tath erew ta srik at eth nbnginieg of aeyr 5) ;-&t-l- aak at teh end of aery 0240505/5 = .5%49 aslo if ouy look at yaer 5: y'olul see atht hte ta ksir talupnoopi si 0840 hwen 003 wen scsae rewe fdoun teh yrea brfeo.e 0550 at the den of ayre 4 MISUN hte 030 wen caess ta teh dne fo aeyr 4 oulhds vegi ouy 7504 sa eht ewn apooinlput at kri.s btu etinco tath edn of raye 5 we ahev 8.004 kid fi tath esanm 50 eppleo wree slefa pievtioss frobee ro 05 lpepeo were dedad tbu in ineeccdin sdt//eitcrtbhahe ndt'o t triaemst' kndi fo like URWODL ID 2.170 nugmsasi evegraa lnauna inccneeid is eht asme as uauvletmic nediniecc sh it swa ujts a unhbc fo rowd .otvmi rsryo fi ti was luaerbaenb ot 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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 +2  upvote downvote
submitted by jotajota94(14)
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icnncieed = urembn of ewn /scsae nwe se+cas tnoaolpipu ta srik. new ces=sa 25.0 oepelP at iskr hatt eyar 5050 (ilnnguicd wne .eacss nI eon tnopi ethy rwee a liuatopnpo at ki)sr 025/ 505=0 49%.

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 +2  upvote downvote
submitted by felxordigitorum(12)
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Exeducl eht naktie a.eyr Add lla eth tpioesvi ulrsest +450+2(5+2000000303+ = 005.)1 vdieDi 0150 by the tltao ebumrn fo natpetis mofr eht rtats fo het niedceicn pr,eiod eary 1, os 0060 &g--;-t 06,10=005./0052 stih is teh gerveaa rscosa all 5 eas.yr For nlu,ana idevdi .205 yb hte rmuben of s,ayre 5 ->- 5/52.0 = .005 -&t;g- .%5

h'atTs who I tgo ti.

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 +1  upvote downvote
submitted by sabistonsurgery(5)
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Ieecicdnn is atyyclilp cdluaalcet as a bnreum edassedi rpe sxdeepo ptnlaipuoo erp niut ,tmei uluslay yrae. For ceha aeyr, iedidv eht lpopee o,dufn by het pelepo dpsxe.eo oYu airrev ta rgsiefu rf aech year egnib %,4 5% dna 6%, varegea neigb .5%

Q: yWh nto ntocu eanitk yrae for hwhci hte nencdiiec sseem to eb ?04%

sAn: oS s'ttah eht kirtc of eht s.iuteqon TI semes ot imlyp the anetki yaer sloa sha 4000 wne ,cesas tub sthi n'its neiei,cdnc hsti is pven!rceale htWa heedanpp erhe was htat the niupootapl fo ,10000 asw not gbein decsrnee rof SIA.D nTeh you sterdat the crngiense .gormrap

ylipcTayl in nya iernnesgc mga,prro ouy llwi esshbtlai hte laebinse nlcepeavre fo eht eisadse by nitgest all fo eth enraegl n.ipaoptuol Yuo find 0400 new ecs,as but eehst were tujs tedtceneud csaes. uoY dceexul hmet from yoru itonrong.im orF eht next r,yae uoy eekp a hatwc on eht 0600 ,tfel fo ichwh 400 edevopl AIS.D ouY ccluaaelt incndeeci for tshi year as .%67 nad ucxeeld eshet 040 mrof eth etxn reya dna os o.n

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 +0  upvote downvote
submitted by sweetsummerblowout(0)
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1b/etletts0r1mtedycpess-:tusart./prlihst0.ae1m/ntecotal/dt-/soph1o-s1ssahi

eTh carth on ihst ties osshw lp/tTerhbaarewuoe//pa .tc(e)gnrtrveciaeo Ths i qntiuseo kass "diloohilke fo inssgmi an aotsaiosin"c - iwhch lilayascb aesmn thwa si het aefls viotspei ar,et chwhi is het iienitofdn of /laphpeTya I eo.rrr otnesi uQ estm eastst a00,=a.lh5p whhci si .5%

Btea is yTpe II rre,ro and dulwo be 1%0 easf(l )ne.igtvae %09 wudlo eb Proew ()e-abt1

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 +0  upvote downvote
submitted by ∗guillo12(58)
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I 'notd owkn het anequito orf ,hist ubt I idd :tish The usm fo cneicnedi rep a/ery hte msu of rmneub anregmaii in puito.lapno ..o S. 50/00,0,2881 = 500.82 or 5.2%

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