MPH 6011 Final Exam With Correct
Questions And Answers 2024
True vor vfalse: vA vretrospective vcohort vstudy vis van vobservational vstudy vbut va vprospective
vcohort vstudy v is van vintervention vstudy. v - vcorrect vanswer.False
What vis vthe vmeasure vof vassociation vif vwe vstart vwith va vcohort vfree vof vdisease vand
vanalysis v is vby vcumulative v incidence? v- vcorrect vanswer.relative v risk
What vis vthe vratio vof vcumulative vincidence vrate vin vexposed vcompared vto vcumulative
vincidence vrate vin vthe vunexposed? v- vcorrect vanswer.relative v risk
What vis vthe vmeasure vof vassociation vif vwe vstart vwith va vcohort vfree vof vdisease vand
vanalysis v is vby vincidence vrates v with vperson-time v in vthe vdenominator? v- vcorrect
vanswer.rate vratio
In va vcohort vstudy, vseveral vdesign vand vimplementation vproblems vcan vimpact vthe
vstrength vof vthe vmeasure vof vassociation. vChoose v which vof vthese vproblems vbelow v is
vleast v likely vin va vcohort vstudy?
a. vinformation vbias
b. vabsence vof vtemporality
c. vloss vto vfollow-up
d. vnone vof vthe vabove v- vcorrect vanswer.b
Among vthe vitems vlisted vbelow, vwhich vdesign vfeature vor vbias vis vNOT vsimilarly vfound vin
vboth vcase-control vand vcohort vstudies?
a. vboth vmake vcomparisons vbetween vexposed vand vunexposed vgroups
b. vconfounding
c. vboth vmeasure vexposure vbefore vdisease voccurs
d. vboth vcan vhave vmisclassification vof vexposure v- vcorrect vanswer.c
Exposure vis vmeasured v__________ vdisease voccurrence vin vcohort vstudies.
, a. vbefore
b. vafter v- vcorrect vanswer.a
In va vcohort vstudy, vthe vassociation vbetween vsmoking vand vcoronary vheart vdisease vwas
vinvestigated vby vselecting vfor vstudy va v group vof v3000 vsmokers vand v5000 vnon-smokers
v who v were vfree vof vdisease vat vbaseline. vBoth vgroups v were vfollowed vfor vthe vdevelopment
a. vexposed vgroup vhad va vgreater vrisk vof vheart vdisease vthan vunexposed vgroup
b. vunexposed vgroup vhad vreduced vrisk vof vheart vdisease vcompared vto vexposed vgroup
c. vexposed vgroup vhad va vreduced vrisk vof vheart vdisease vcompared vto vthe vunexposed
vgroup v- vcorrect vanswer.c
Which vof vthe vfollowing vis van vadvantage vof vcohort vstudies?
a. vcan vexamine vmultiple voutcomes vfrom va vsingle vexposure
b. vcan vmatch von vconfounders
c. vcan vavoid vrecall vbias
d. vcan venroll vcases vat vbeginning vof vstudy v- vcorrect vanswer.a
True vor vfalse: vA vcase vcontrol vstudy vcan vbe vembedded vwithin va vcohort? v- vcorrect
vanswer.True
What vare vthe vtwo vexamples vof vcase-control vdesign vembedded vwithin va vcohort? v-
vcorrect vanswer.Nested vcase vcontrol vand vcase-cohort
What vis vthe vdesign vfeature vunique vto vexperimental vstudies? v- vcorrect
vanswer.Randomization
True vor vfalse: vThe vpurpose vof vrandomization vis vto veliminate vconscious vbias vby vprovider
von vpatient vselection vfor v treatment vgroup. v- vcorrect vanswer.True
What vare vthe vtwo vreasons vwhy vrandomization vis vpreferred vto vnon-randomized vstudies?
v- vcorrect vanswer.1. veliminates vconscious vbias vby vprovider von vpatient vselection vfor
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