IDENTIFY WHICH STATISTICAL TEST YOU WOULD USE IN CONJUNCTION WITH YOUR SELECTED RESEARCH DESIGN FROM DQ 1 TO EVALUATE THE OUTCOMES FOR YOUR EVIDENCE-BASED PROJECT PROPOSAL AND EXPLAIN WHY YOU SELECTED THIS TEST NUR 590
Identify which statistical test you would use in conjunction with your selected research design from DQ 1 to evaluate the outcomes for your evidence-based project proposal and explain why you selected this test. What kind of information will this test provide about your outcomes?
According to Parab & Bhalerao, “statistical tests are mathematical tools for analyzing quantitative data generated in a research study” (2010). There are a number or test that researchers can use which can also become overwhelming and cause confusion for the research, and that can lead to sabotaging and tainting their study. Selecting the statistical test helps the researcher understand what to look for in the study as well as help organize their data. Parab & Bhalerao (2010) stated that “Before selecting a statistical test, a researcher has to simply answer the following six questions, which will lead to correct choice of test:”.
1. How many independent variables covary (vary in the same time period) with the dependent variable?
2. At what level of measurement is the independent variable?
3. What is the level of measurement of the dependent variable?
4. Are the observations independent or dependent?
5. Do the comparisons involve populations to populations, a sample to a population, or are two or more
6. Is the hypothesis being tested comparative or relationship?
Statistical testing is used explain the results of a study. The test that I would use would be the t-test. “A t-test is a type of inferential statistic used to determine if there is a significant difference between the means of two groups, which may be related in certain features” (Investopedia, n.d.). I would used this test because of show the averages of nurses to patient ratios to help determine the correlation between low staffing and high staffing and whether each has a positive or negative effect on patient health outcomes.
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Investopedia. (n.d.). T-Test. Retrieved from https://www.investopedia.com/terms/t/t-test.asp
Parab, S. & Bhalerao, S. (2010). Choosing Statistical Test. International Journal of Ayurveda Research. 1(3): 187-191. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2996580/
Statistical tests can be chosen based on independent factors and other project designs. My project seeks to identify if PPE education increases informal (family) caregiver compliance to PPE usage. I’ve identified at least one confounding variable, which is the effects of PPE usage modeling by staff. Siebert et al. (2018) found staff modeling and teaching was a big part of compliance of visitors. However, there is a test which accounts for differences in participants.
I am choosing a mixed design ANOVA test due to the used of different participants in each group. A mixed design measures “change over time, differences between the groups, interaction of time and group effects” (Tappen, 2016). This will show the differences between groups (education versus no education) and within the groups themselves. It can be used to measure the change between before and after the intervention of education. It will help control for the different participants in each intervention group. It could measure the change from several different time points, as desired.
Seibert, G., Ewers, T., Barker, A. K., Slavick, A., Wright, M. O., Stevens, L., & Safdar, N. (2018). What do visitors know and how do they feel about contact precautions? American Journal of Infection. 46(1): 115–117.
Tappen, R. (2016). Advanced Nursing Research. Jones & Bartlett.
It is important to choose the correct statistical test when conducting research, as research should maintain validity. To correctly perform the statistical analysis of quantitative data, two key points should be considered: One is to identify the type of experimental design correctly, and the other is to check whether data meets the preconditions of the parameter test (Liang & Wang, 2019. If these are not considered, it can cause misuse of data and can possibly conclude false conclusions. I believed that the Paired T- Test would best fit my project proposal. The Paired T-Test tests the difference between two variables with the same population. For example pre and post test scores. This would allow the comparison of performance before and after the completion of the organizational change implementation. Determining the amount of hands off time during cardiopulmonary resuscitation would be the first variable, while the data obtained for hands off time during CPR with implementation of continuous compressions during defibrillation would be the second variable. Comparing these two variables should produce the conclusion that continuous compressions during hands on defibrillation decreases hands off time during CPR and increase patient outcomes. Ultimately this test would determine the amount of “hands-off” during CPR comparing standard CPR and continuous compressions during defibrillation.
Liang, G., Fu, W., & Wang, K. (2019). Analysis of t-test misuses and SPSS operations in medical research papers. Burns & trauma, 7.