1. You read an article and you decide that it is a level III in the evidence hierarchy. Which is a correct description of a level III level of evidence? a. Single nonexperiemental study b. Controlled trial without randomization (a quasi experimental study) c. A systemic review or meta analysis of randomized controlled trials d. A systematic review of descriptive and qualitative studies

Answer: B More test answers on https://studyhippo.com/research-study-guide/

Randomized controlled trials contain which of the following components: Choose one answer. A. Comparable measurement of outcomes in treatment and control conditions B. All of these are correct C. Rigorous inclusion and exclusion criteria D. Blinding or masking to prevent bias

B More test answers on https://studyhippo.com/epidemiology-quiz-6/

2.6 Describe the factors that influence outcomes of randomized controlled trials

The outcomes of a randomized clinical trial are influenced by how participants are selected, the study design’s internal and external validity, and the types of measures used. Different types of clinical trials are designed to answer different questions. Efficacy research, for example, attempts to maximize internal validity and the ability to draw causal conclusions. Effectiveness research emphasizes external validity and increased applicability to real-world patients and settings More test answers on https://studyhippo.com/ch-2-research-methods-in-abnormal-psychology-2/

Randomized controlled trials include: Choose one answer. A. All of these are correct B. Prophylactic trials C. Therapeutic trials D. Clinical trials

A More test answers on https://studyhippo.com/epidemiology-quiz-6/

1, 4 A case-control study is performed to find out the cause for a disease. A retrospective study looks back in time to evaluate the available data and find the variables in a disease. Although randomized controlled trials can be used for investigating cause and effect, they are more suitable for exploring drug therapies. Historical studies are performed to confirm facts and relationships about a past event. Descriptive studies help to measure characteristics of persons, situations, or groups and the frequency with which certain events or characteristics occur.

A 55-year-old patient is diagnosed with lung cancer and has a history of smoking. Which type of study would be initiated to find the association between smoking and lung cancer,? Select all that apply. 1 Case-control study 2 Randomized controlled trial 3 Historical research 4 Retrospective study 5 Descriptive research More test answers on https://studyhippo.com/foundations-chapter-5-evidence-based-practice/

1 If the evidence acquired through varied research is not strong enough to apply in practice, the next option for the nurse is to conduct a pilot study. A pilot study is research done on a small scale. Conducting systematic reviews or randomized controlled trials involves tedious processes and takes a long time to obtain results. Even though these methods provide high quality evidence, they are less likely to be performed by the nurse working in a clinical setting. The nurse does not apply the predicted results of research in clinical settings without suitable evidence.

The nurse is referring to various research articles in order to acquire information about a PICOT question for which no pilot study has been done. After studying the references, the nurse finds that the evidence is not strong enough to apply in practice. What should the nurse do to investigate the PICOT question? Choose the best answer. 1 Conduct a pilot study. 2 Conduct a systematic review. 3 Conduct a randomized controlled trial. 4 Implement the change that the nurse predicts in clinical settings. More test answers on https://studyhippo.com/foundations-chapter-5-evidence-based-practice/

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Randomized Controlled Trials Flashcards, test questions and answers

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What is Randomized Controlled Trials?

A randomized controlled trial (RCT) is a type of scientific experiment that involves randomly assigning different treatments to participants in order to compare their effects. This is one of the most commonly used methods for testing the efficacy of new pharmaceuticals and medical devices, as well as for evaluating the effectiveness of various interventions in fields such as psychology and public health. The main advantage of RCTs over other types of research is that they reduce bias by ensuring that all participants have an equal chance of being assigned any given treatment or condition.In an RCT, a group of volunteers (or patients) are randomly divided into two or more groups. One group receives the experimental treatment while another group receives either no treatment or a placebo (inactive substance). Then, outcomes are measured periodically over time to determine if there is any difference between the experimental treatment and control groups. Depending on the study design, there may be additional groups receiving different doses or types of active treatments to further test specific hypotheses.RCTs provide several advantages over other forms of evaluation such as observational studies and surveys, which can be biased due to differences in individual characteristics or confounding variables like age and education level. Additionally, because RCTs include random assignment to conditions and control groups, they allow researchers to isolate causal relationships between treatments and outcomes more easily than with other approaches. Finally, by creating replicable results with high levels of statistical significance, RCTs can provide evidence that can be used for decision-making in medical settings and beyond. Overall, randomized controlled trials are important tools for producing reliable evidence about how interventions affect health outcomes in humans.