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NBME 23 Answers

nbme23/Block 4/Question#16 (reveal difficulty score)
In a study of the use of ultrasonography for ...
80% ๐Ÿ” / ๐Ÿ“บ / ๐ŸŒณ / ๐Ÿ“–
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 +6  upvote downvote
submitted by โˆ—yb_26(315)
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oralabnm tste ursetl seanm hatt tets ecttesd accner =;t&g

  • 35 fo 05 nem ihtw oaetrtps acncer hvae brlnaoam estt stuler t&g=; n of pst thwi ecarnc = 0.5 Ttes swosh ranecc in 53 mne &t=;g =3P5T &t;=g ew acn cclleuata FN = 530-5 = 51

  • 20 fo 100 men htwoiut tseopart ceacrn vaeh laonabrm tste slutrse t;=&g PF 2=0 &;=tg ew acn elcaclatu TN = 102-0=080

  • wno we can eclataluc scipficyiet = N(F+/PTTN) = 0/0180 = 0.8 i(n % liwl eb )%80

eerh si ym 4/4 tbea:l [ b3uws_.:eon/rrn_o/swattcu1t.e/oqoe/ehucp/rtnll2c/ewsosfcs/tbm3tmdt/_mmimemsipdtwi]

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smc213  tEyxlac wtha I di!d +
smc213  I edgogol hte ieagnmn fo oamnbarl stet slesrtu jtus to eakm .uers A poiseivt test is neo ni wcihh eth slruet fo teh estt si nalm;aorb a iatengve stte is eno ni hhciw eth s'stte esrltu si lnr.oma +4

This guy on youtube does a killer job on explaining all these problems. Just does problem after problem on 2x2 tables and a few other topics. The link to part 1 is added, part two you can find on the side panel I'm sure. Part 1

+1/- paulkarr(73)


 +1  upvote downvote
submitted by โˆ—meningitis(643)
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eTh oinqeust si snfgnucio cbuaees a ETRU TOEVIPSI sett ertlsu si iinfdng tdgnectie cnraec by SU o(sge to ohws ouy ew attog kloo ta tahw het sett is olonkig fr).o

nA AARMNOBL ttse dnegtteci PCra nmsea tis TON A OSITP:EIV e:i 35 out fo 50 were esFla soesivPit

An MRALANOB etts IUWOTTH CrPa anesm sti OTN A IATENEV:G 02 out fo 001 TUITWOH rPaC ewer ELSAF EAV.IEGTN

NT = 80, PF = Sfp i:1ie.5iyctc N+;PN/)TTF( 1)+/8(5080 = .48n%A d csnie it assy teb"s sseetrp"enr ehnt 8%4 is ltecsso ot 8.%0

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 +0  upvote downvote
submitted by โˆ—lfsuarez(160)
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02 fo het 001 men uwoitth tpraetos crcena heav lobmnara test ser.ltus

icefSypiitc = N/P+PTFF = 0120/0 = .08 = 80%

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seagull  lsta.mo 10 2/ 10 0 = 83% huloryg %08 +
amirmullick3  tNo usre athw eazrflus nad guealsl vaeob neam. Here is ym iiySeeacl i.nptoixatfpnc = )P/N(T.+TNF shTi stte gvea 20 sleaf ptoiessvi tou fo 100 elpep,o nad lyon 51 ruet aesnvteig otu fo 50 neiS fimpcit.eyc laso lasueq -Fae,rtP1 nda rhee eth FP taer msese %20 so 1.%0%%208-=00 +4
yb_26  abranmlo ttes ureslt eamns tp hsa eanccr P=T g&;t = 5,3 FN = 15 (3,-)505 ,=2FP0 NT 8=0 2001(-)0 ;gt=& yctesicfiip = NF)PN/(+TT = 0/1080 = 8.0 in( % will be u80t% er) etgavinse era 08 out of 100, not 15 uot fo 50 +2
bulgaine  fI yuo peclare teh uevals fomr het sqtienuo ni eth betal of pega 527 fo AF ,9012 y2_6b ipaoxeltnan is trc.reoc mAalonrb estt = taipten sha cecrna = ttse uite+Qso n assy 053/5 mne hitw oeattpsr ccenra os( lal 05 aehv cencar) loyn 53 heva banmalor tset ls,srute ienmnag htta 5T=P3 e(eisads + ttse )+ adn =NF 51 se(disae + stte - abecesu teyh do eavh crenca ubt hte tets asw ton nrmabola fro meth .) 0/ 2010 enm whttoui psotarte rcaenc veah rnlabamo tste suerlst emaingn lal 010 ONDT hvae ccearn tub 02 ohsw ttha teyh ehav rncaec ewnh sti tno ertu so P0=F2 (sdaeesi - tets )+ and TN =08 as(edsie - test )- +



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