Study Design: Evidence Table
The next step in the research process is immersing oneself in the empirical literature on your research topic to determine the extent to which your research question (identified in Module 1) has been addressed. To this end, please use the Trident University Online Library to conduct a literature search on your research topic. Remember, your goal is to discover the extent to which a knowledge gap exists with regard to your specific research question.
Your task for this assignment is to:
Locate five peer-reviewed journal articles that present studies relevant to your topic, and synthesize these in an evidence table. Go to: Evidence Table for more details on what this table should contain.
Based on your evidence table, address the following questions in 1-2 pages:
What are the gaps in the available qualitative and quantitative data about your selected research topic/question?
Which study design is most appropriate to address your research question and test your hypothesis?
What are the components of this study design? You may describe using a diagram.
Would this design be considered experimental or observational? Why?
What are the advantages and disadvantages of the study design you selected?
To what types of bias/threat is this study design most vulnerable? Please explain.
Length: 4 pages typed, double-spaced.
Jeon, J. Y., Ha, K. H., & Kim, D. J. (2015). New risk factors for obesity and diabetes: Environmental chemicals. Journal of diabetes investigation, 6(2), 109-111.
Nedeltcheva, A. V., & Scheer, F. A. (2014). Metabolic effects of sleep disruption link to obesity and diabetes. Current opinion in endocrinology, diabetes, and obesity, 21(4), 293.
PUBMED CENTRAL. (2018) Gender Norms and Modern Contraceptive Use in Urban Nigeria: A Multilevel Longitudinal Study. Retrieved from: https://www(dot)ncbi(dot)nlm(dot)nih(dot)gov/pmc/articles/PMC6206649/
THE OFFICE OF RESEARCH INTEGRITY. (2017) The Research Clinic. Retrieved from: https://ori(dot)hhs(dot)gov/TheResearchClinicVideo/
Volta, F., & Gerdes, J. M. (2017). The role of primary cilia in obesity and diabetes. Annals of the New York Academy of Sciences, 1391(1), 71-84.
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Evidence Table
An evidence table gives the researcher a practical approach to choosing a suitable study design for detailed research. Below is an evidence table for five journal articles for the research topic of diabetes. The evidence table shows the study designs applied in every article describing a unique condition. It analyses the various components that give the evident quality of the journals used.
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3
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5
6
7
8
9
10
Condition
Study Design
Author, Year
N
Statistically Significant?
Quality of Study
Magnitude of Benefit
Absolute Risk Reduction
Number Needed to Treat
Comments
Obesity
Meta-Analysis
Jean et al., 2015
8994
N/A
3
N/A
N/A
N/A
Exclusive on male employees
Obesity and Diabetes
Systematic Review
Nedeltcheva & Scheer, 2014
N/A
N/A
N/A
N/A
N/A
N/A
Decrease sleep associate with obesity, diabetes.
Contraceptive Use
Meta-Analysis
Pubmed Central., 2018
9933
N/A
3
N/A
N/A
N/A
Reproductive women aged 15-49 years
Research Integrity
Action Research Design
The Office Of Research Integrity., 2017
N/A
N/A
4
N/A
N/A
N/A
Applicable to a clinical setup
Diabetes
Meta-Analysis
Volt & Gerdes, 2017
N/A
N/A
N/A
N/A
N/A
N/A
Diabetes connected to β cell dysfunction
Answers to Questions
1 Most articles lack details on the study's nature regarding its quality, for example, failing to indicate the withdrawals and dropouts. Therefore, grading the quality of the scale becomes impractical. Besides, in most articles, the description between experimental and control event rates is not well-differentiated; hence, absolute risk reduction values cannot get calculated. Thus, a gap in the research in these aspects, considerations that the researcher should take care of to ensure the resultant work does not depict the same.
2 Cohort Prospective study. The design will enable the possibility of analyzing multiple research outcomes within available research, increasing the statistical accuracy i...
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