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Selecting a Quantitative Research Design
Terms in this set (54)
Studies concerned with testing hypotheses to determine if specific exposures are related to the presence or absence of specific diseases
Analytic Epidemiological Studies
Elements built into a design to reduce or eliminate interpretations of the cause of the results
The group that does not receive the experimental treatment in an experiment or intervention
A study designed to describe the meaning of existing phenomena
A study used to describe and explain the nature and magnitude of existing relationships
Descriptive correlational study
Studies concerned with the distribution and patterns of disease or disability in a population
Descriptive epidemiological studies
Treatment assignment is unknown to patients and healthcare providers
The group that receives the new treatment in an experiment
The extent to which the results of a study can be generalized from the study sample to the target population
Any variable that is not directly related to the purpose of the study but may affect the dependent variable
Refers to whether the independent variable made a difference
Organizing framework that contains a set of assumptions or values that underlie how scientists view reality, truth, and research
Research directed at the discovery of meaning and underlying philosophical inquiry or psychological and sociological underpinnings
Research directed at the discovery of relationships and cause and effect
A prospective study evaluating the effectiveness of an intervention/treatment in a large sample of patients
Randomized clinical trial
Set of guidelines by which a researcher obtains answers to questions
Treatment assignment in unknown to patients only
What type of research has to do with numbers and a single reality?
What are the types of quantitative designs?
In experimental designs, cause must precede what?
What variable is manipulated to bring about change in an experimental design?
What are the three properties of an experimental design?
Randomization or Random Assignment
The independent variable must be something that can be what in an experimental design?
What is the essence of an experimental design and eliminates variables other than the independent variable from influencing the dependent variable?
What part of an experimental design ensures differences in outcomes between groups is likely not related to chance alone?
An extraneous variable can be what two types?
External or Internal
When you cannot have a control in an experimental design what may influence outcomes?
What are the types of experimental designs?
-Randomized pretest-posttest control group
-Randomized post-test only control group
-Randomized clinical/control trials
In a randomized pretest-posttest design there is baseline data attained from what group(s) prior to the intervention?
Control and experimental group
Which experimental design is the gold standard?
Randomized Control/Clinical trials
How are RCT different from the other two experimental designs?
They include multiple sites and a large number of participants
Why may blinding be done?
How is quasi-experimental different from experimental?
It lacks random assignment and/or a control group
In a nonequivalent control group the groups are..
What are the strengths of quasi-experimental designs?
Adaptable to a real world setting
What are the weaknesses of quasi-experimental designs?
Inability to make as strong of a cause-and-effect determination
What determines if the independent variable made a difference?
What are threats to internal validity?
How does history effect internal validity?
An event that occurs between data collection points may effect the dependent variable
How does maturation effect internal validity?
The person may outgrow the condition being studied through developmental, biological, or psychological processes
Maturation is minimized by the use of what?
a control group
What quantitative design uncovers new knowledge, explores events, people, or situations?
Non-experiemental design is used to answer what?
What are characteristics of an independent variable in a non-experimental design?
Unable to manipulate
Unethical to do experimental design
What type of research design documents aspects of a phenomenon, provides a better understanding, and is used when little is known about the topic?
What are forms of descriptive statistics?
Descriptive designs are used for what type of data collection?
What type of research design examines the relationship between two or more variables, the independent variable is not manipulated, and tests as one variable changes, does a related change occur in another variable?
Correlational studies quantify strength of what between variables?
You cannot establish what in non-experimental designs?
Cause and effect
What is not an actual type of research design, and uses data from a different original study to answer a different research question?
What type of study combines findings from several other studies, and does statistical analysis of combined findings?
What type of study is population-based, describes patterns, or identifies risk factors?
What is the most widely accepted method for evaluating the effectiveness of an intervention?
Randomized Clinical Trials
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