EBP Quiz 2 Flashcards
Quantitative Research
Statistical analyses. Statistically significant. Classically measured with a p-value.
Statistical Significance
Goal is to get a p value of <0.05. This means that there is a 5% likelihood that the results were due to chance, but a 95% likelihood that the results were due to the intervention.
Good chance that this change would not have been observed if the intervention had no effect whatsoever.
Clinical Significance
“Statistical tests alone cannot identify how important the results are to clinical practice.” Clinical significance can be determined by consensus of expert opinion of whether or not it is useful in practice.
Reliability
Refers to the consistency of a measure. (If you gave the same test over time would the results be reasonably the same? Weighing yourself throughout the day reasonably similar results, not suddenly 50# heavier.)
Validity
The extent to which a concept is accurately measured. Internal is a tool that accurately measures concepts, and external is the generalizability to other populations/settings. Are you measuring what you say you’re trying to measure? Trying to measure depression but all your questions are geared towards anxiety, ie.
Non-Experimental Quantitative
Type of research in which there is no intervention, randomization, or control. Weaker form of research. Uses descriptive studies.
Descriptive Study
Used to describe characteristics of a phenomenal. Often in the form of surveys. Variables are not manipulated. No attempt is made to determine if an intervention causes something to happen.
Quasi-Experimental Research
Intervention. No randomization or control. Trying to show that an intervention causes a certain outcome. Used when not practical, ethical, or possible to use randomization, control, and intervention.
Experimental Research (3)
Randomized control trials.
Intervention - Randomization - Control
Controlled Quasi-Experimental Study
Intervention and control but no randomization. Outcomes are measures before and after the intervention in the intervention group and in the control group
Uncontrolled Quasi-Experimental Study
Intervention, no randomization no control. Same outcomes are measured before and after the intervention in one group
Experimental Study/Randomized Control Study
Randomization - Control - Intervention
Systematic Reviews
Summarizes critically appraised research evidence. Includes a specific research question. Comprehensive search strategy. Rigorous appraisal methods. Group of experts, secondary research. High-level overview of primary research on a focus question. Answers a focused clinical question, takes months to years.
Meta-Analysis
Use of statistical methods to summarize results of multiple studies.
Research gold standard?
Systematic Review with Meta-Analysis