NR 503 Epidemiology midterm Exam.pdf

1. The ipopulation iof ia icity ion iFebruary i15, i2005, iwas i36,600. iThe icity ihas ia ipassive isurveillance isystem ithat icollects ihospital iand iprivate iphysician ireports iof iinfluenza icases ievery imonth. iDuring ithe iperiod ibetween iJanuary i1 iand iApril i1, i2005, i2,200 inew icases iof iinfluenza ioccurred iin i the icity. iOf ithese icases, i775 ipersons iwere iill iwith iinfluenza iaccording ito isurveillance ireports ion iApril i1, i2005. iThe iprevalence irate iof iactive iinfluenza ias iof iApril i1, i2005, iwas: Correct! i20 iper i1,000 ipopulation 2. The ipopulation iof ia icity ion iFebruary i15, i2005, iwas i36,600. iThe icity ihas ia ipassive isurveillance isystem ithat icollects ihospital iand iprivate iphysician ireports iof iinfluenza icases ievery imonth. iDuring ithe iperiod ibetween iJanuary i1 iand iApril i1, i2005, i2,200 inew icases iof iinfluenza ioccurred iin i the icity. iOf ithese icases, i775 ipersons iwere iill iwith iinfluenza iaccording ito isurveillance ireports ion iApril i1, i2005. iThe imonthly iincidence irate iof iactive icases iof iinfluenza ifor ithe i3-month iperiod iwas: Correct! i 20 iper i1,000 ipopulation 3. What iwould ibe ithe ieffect ion iage-specific iincidence irates iof iuterine icancer iif iwomen iwith ihysterectomies iwere iexcluded ifrom ithe idenominator iof iincidence icalculations iassuming ithat i most iwomen iwho ihave ihad ihysterectomies iare iolder ithan i50 iyears iof iage? Correct!: iRates iwould iincrease iin iwomen iolder ithan i50 iyears iof iage ibut imay idecrease iin i younger iwomen ias ithey iget iolder. 4. The iability iof ia isingle iperson ito iremain ifree iof iclinical iillness ifollowing iexposure ito ian iinfectious i agent iis iknown ias: Correct!: i Immunity