Were the essential demographic variables examined and summarized?

Select another quantitative study from your literature related to your PICOT question. Outline the research variables.
Respond to each of the following questions/areas:
Are the independent or dependent variables or research variables or concepts identified?
Are the variables that are manipulated or measured in the study consistent with the variables identified in the purpose or the objectives, questions, or hypotheses?
Were the essential demographic variables examined and summarized?
Were the extraneous variables identified and controlled as necessary in the study?
Are there uncontrolled extraneous variables that may have influenced the findings? Is the potential impact of these variables on the findings discussed?
Summarize the data collection, data management and analysis, problem statement and interpretation of the findings.
Explain the concepts of reliability and validity and how statistical methods can affect them.
Identify the statistical procedures used. Do the statistical procedures used lead to a reliable and valid conclusion?
Judge whether the author’s interpretation of the results is appropriate.
Evaluate the clinical significance of the findings.