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Based on how you will evaluate your EBP project, which independent and dependent variables do you need to collect? Why?

(Sam, O 5/30)

It is essential to have a good understanding of the concept and meaning of variables when carrying out a research work or project, this enables the researcher to know the independent and dependent variables in the intended study. Variables are defined as the properties or kinds of characteristics of certain events or objects; these variables may not always have a numerical value. There are three different types of variables: dependent, independent, and extraneous (Helbig, 2018).

The two main variables in my evidence-based practice experiment are the patient-to -nurse ratio (independent variable) and patient outcomes (dependent variable). To better understand, an independent variable is a variable that is changed or controlled in a scientific experiment to test the effects on the dependent variable (Burns & Groves, 2016). A dependent variable is dependent on the independent variable as the experimenter changes the independent variable, the effect that one has on the other. The independent and dependent variables may be viewed in terms of cause and effect. If the independent variable is changed, an effect is seen in the dependent variable (Burns & Groves, 2016).

The values of both variables may change in an experiment and are to be recorded. The difference is that the experimenter controls the value of the independent variable, while the value of the dependent variable only changes in response to the independent variable.


Burns, N., & Groves, S. (2016). Understanding nursing research. Elsevier.

Helbig, J. (2018). History and process of nursing research, evidence-based nursing practice, and quantitative and qualitative research process . Grand Canyon University. Retrieved from



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