Answer this following questions? 75. Random assignment of subjects to study groups helps to control forA. directionality of exposure.B.74. Randomized controlled trials have which of the following components?A. Rigorous inclusion and exclusion criteriaB. Blinding or masking to prevent biasC. Comparable measurement of outcomes in treatment and control conditionsD. Randomized controlled trials have all of these components76. What type of trial tests a group intervention?A. ClinicalC.D.A.B.C.D.B.A.B.biases due to confounding.timing of data collection.None of these is correct.B. ProphylacticC. TherapeuticD. Community estuotorandom.B.C.D.Between-group designFactorial design sasszib to yiilidsdong staRandom assignmentStrC.D. Ecological rolD. Cohorttoms2h to stuees toobnimexeBUTTA. Within-group design77. The outcome in a group is compared both before and after an assigned intervention using a distPad..Which of the following is an advantage to using a run-in period in an intervention study?Increases generalization of the results used when Stdessin16 100 10,900g nor 910m sono boeuMinimizes bias due to loss to follow-up control study?Reduces bias due to confounding MD1230 YOUT2Reduces bias due to differential recallOddsnoidqmuenos sidslags[dousonuotno921673. In which study design are neither the participants nor investigators aware of who is receiving the placanalyses are done blind to investigators? on 'einaqibineq moit aftluasWA. Single-blinded OPriateDouble-blindedTriple-blinded135snifInlog Eas beBUITaziat01512bThat is the primary limitation with using a nonrandomized clinical trial?Not effective at controlling for measured confounding variablesOUT TONot effective at controlling for unmeasured confounding variablesC.Patients may be assigned to an intervention group that they prefer not to be assigned.D. A comparison group is not available.92167hos291bol 82. Three principles guide research that involves human participants. These areA. respect for persons, beneficence, and justice.\ II 321A330RTB. confidentiality, compensation, and avoiding harm.C. explain the meaning of each of these principles.D. equitable access to benefits of research, moral rightness in action or attitude, and minimizing risk.SUIT Aistens 883. Which of the following best describesa Phase II trial?A. Relatively small randomized, blinded trial that tests tolerability and different intensity or dose of thedelB.intervention on surrogate or clinical outcomes asilibom balls brisStudies involving animals or cell culturesC. Relatively large randomized, blindedtrial used to evaluate the efficacy of an interventionD. An unblinded and uncontrolled study involving a few volunteers to test the safety of an interventionE. Large studies (may or may not be a randomized trial) conducted after the therapy has been approvedby the FDA to assess the rate of serious side effects and explore further therapeutic usesinoo-odsosiq s84. A factorial design may be useful for all of the following reasons, EXCEPTA. allows testing of a less-mature hypothesis along with a more mature hypothesis.B. allows one to answer two or more questions in a single study.C. reduce cost.D. reduce feasibility.A.MD23 B.0769291 101 eb85. Which of the following designs is potentially most useful for making a judgment about causality?A.52163Cross-sectionalCase-controlB.C. Case seriesD. Experimentalqs srit ritiw86. What effect does randomization in a large intervention study have?hom aondMinimizes bias in the observation of outcomes of interestMinimizes potential bias in the allocation of participants to treatment groupBoth A and B are correct.a) to eno of bengieas yimtadootNeither A nor B is correct.enoitnsvistni owt add to anoitenC.90 TD.29/192Ishots .0.A163 899qis29bsearT.ES87. Theis defined as the effect on patient outcomes that may occur due to the expectation bypatient that a particular intervention will have an effect. bengizzs vimobos nord ens smil to bottoq19A.interviewer effectB.silgqs zi noitnevetni sdi neri nilazed to benuzsam 915 29idshev smepice Trecall effectto bns erit 16 nisgs benuasom 916 zaldsinsv amooduo sri hortoo storiC. selection effectni-04-D. placebo effectbohsq qu-wollet916 20ldshev smootuo bas odsosiq 10 ihmiset of besimobris 916 atnaqlaineodsosią srit nor Jostte 19voymes souber of so boisq fuarlesw A bonuzeomniegs 916 29lási16 mot soiv bns nolingvisini srit of banglaes ei quonsbenuaconv

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Randomized controlled trials have which of the following components? A. Rigorous inclusion and exclusion criteria B. Blinding or masking to prevent bias C. Comparable measurement of outcomes in treatment and control conditions o D. Randomized controlled trials have all of these components