The dataset to use to complete this assignment is “MN Admission” dataset
Assignment #1: Quantitative Analysis
For this assignment, you should choose one dataset from the list/links below. You should then analyze the dataset you chose using Excel Analysis ToolPak or RStudio (for bonus points)
Six Datasets to select and use for analysis in this class :
Minnesota Healthcare Database.xlsx
Medicare National Data by County
MN Hospital Report Data by Care Unit FY2013
MN HCCIS Imaging Procedures 2013
MEPS Dental Files
MEPS Inpatient Stay Database
You should develop an analysis report, in five main sections, including (1) Introduction, (2) Analysis (including research questions/objective, data set used, research method, and analysis steps), (3) Results (tables, graphs, and discussion of results), (4) Conclusion and health policy recommendations. This is a 5-6 page individual project report.
Here are the main steps for this assignment.
Step 1: You submitted a topic you plan to use for this assignment in week 1. If the Professor has approved that topic for you to use then carry on.
Step 2: Develop the research question for that approved topic. Then, select the data set you could use to answer the research question, plan the research method you would use, the tables and graphs you would create using the data you have analyzed, and the analysis steps you would take. Refer to the instructions on the Report Structure below.
Step 3: Run the analysis using Microsoft EXCEL Analysis ToolPak (or RStudio if that is the software you chose in Week 1) and report the findings based on the instructions below.
The Report Structure:
Start with the
1. Cover page (1 page, including running head).
Please look at the example http://www.apastyle.org/manual/related/sample-experiment-paper-1.pdf (you can download the file from the class) and http://www.umgc.edu/library/libhow/apa_tutorial.cfm to learn more about the APA style.
Your title page should include:
Title, this is the approved topic by your instructor.
Introduce the problem or topic being investigated. Include relevant background information, for example;
Indicates why this is an issue or topic worth researching;
Highlight how others have researched this topic or issue (whether quantitatively or qualitatively), and
Specify how others have operationalized this concept and measured these phenomena
Note: Introduction should not be more than one or two paragraphs.
There is no need for a literature review in this assignment
3. Research Question or Research Hypothesis
What is the Research Question or Research Hypothesis?
***Just in time information: Here are a few points for Research Question or Research Hypothesis
There are basically two kinds of research questions: testable and non-testable. Neither is better than the other, and both have a place in applied research.
Examples of non-testable questions are:
How do managers feel about the reorganization?
What do residents feel are the most important problems facing the community?
Respondents’ answers to these questions could be summarized in descriptive tables and the results might be extremely valuable to administrators and planners. Business and social science researchers often ask non-testable research questions. The shortcoming with these types of questions is that they do not provide objective cut-off points for decision-makers.
In order to overcome this problem, researchers often seek to answer one or more testable research questions. Nearly all testable research questions begin with one of the following two phrases:
Is there a significant difference between …?
Is there a significant relationship between …?
Is there a significant relationship between the age of managers? and their attitudes towards the reorganization?
A research hypothesis is a testable statement of opinion. It is created from the research question by replacing the words “Is there” with the words “There is,” and also replacing the question mark with a period. The hypotheses for the two sample research questions would be:
There is a significant relationship between the age of managers and their attitudes towards the reorganization.
It is not possible to test a hypothesis directly. Instead, you must turn the hypothesis into a null hypothesis. The null hypothesis is created from the hypothesis by adding the words “no” or “not” to the statement. For example, the null hypotheses for the two examples would be:
There is no significant relationship between the age of managers
and their attitudes towards the reorganization.
There is no significant difference between white and minority residents
with respect to what they feel are the most important problems facing the community.
All statistical testing is done on the null hypothesis…never the hypothesis. The result of a statistical test will enable you to either:
1) reject the null hypothesis, or
2) fail to reject the null hypothesis. Never use the words “accept the null hypothesis.”
*Source: StatPac for Windows Tutorial. (2017). User’s Guide; Formulating Hypotheses from Research Questions. Retrieved May 17, 2019 from https://statpac.com/manual/index.htm?turl=formulatinghypothesesfromresearchquestions.htm
What does significance really mean?
“Significance is a statistical term that tells how sure you are that a difference or relationship exists. To say that a significant difference or relationship exists only tells half the story. We might be very sure that a relationship exists, but is it a strong, moderate, or weak relationship? After finding a significant relationship, it is important to evaluate its strength. Significant relationships can be strong or weak. Significant differences can be large or small. It just depends on your sample size.
To determine whether the observed difference is statistically significant, we look at two outputs of our statistical test:
P-value: The primary output of statistical tests is the p-value (probability value). It indicates the probability of observing the difference if no difference exists.
The p-value from above example, 0.9926, indicates that we DO NOT expect to see a meaningless (random) difference of 5% or more in ‘hospital beds’ only about 993 times in 1000 there is no difference (0.9926*1000=992.6 ~ 993).
Note: This is an example from the week1 exercise.
The p-value from above example, 0.0001, indicates that we’d expect to see a meaningless (random) ‘number of the employees on payer’ difference of 5% or more only about 0.1 times in 1000 (0.0001 * 1000=0.1).
CI around Difference: A confidence interval around a difference that does not cross zero also indicates statistical significance. The graph below shows the 95% confidence interval around the difference between hospital beds in 2011 and 2012 (CI: [-40.82 ; 40.44]):
CI around Difference: A confidence interval around a difference that does not cross zero also indicates statistical significance. The graph below shows the 95% confidence interval around the difference between hospital beds in 2011 and 2012 (CI: [-382.16 ; 125.53]):
The boundaries of this confidence interval around the difference also provide a way to see what the upper [40.44] and lower bounds [-40.82].
As a summary:
“Statistically significant means a result is unlikely due to chance.
The p-value is the probability of obtaining the difference we saw from a sample (or a larger one) if there really isn’t a difference for all users.
Statistical significance doesn’t mean practical significance. Only by considering context can we determine whether a difference is practically significant; that is, whether it requires action.
The confidence interval around the difference also indicates statistical significance if the interval does not cross zero. It also provides likely boundaries for any improvement to aide in determining if a difference really is noteworthy.
With large sample sizes, you’re virtually certain to see statistically significant results, in such situations, it’s important to interpret the size of the difference”(“Measuring U”, 2019).
Measuring U. (2019). Statistically significant. Retrieved May 17, 2019 from: https://measuringu.com/statistically-significant/
Small sample sizes often do not yield statistical significance; when they do, the differences themselves tend also to be practically significant; that is, meaningful enough to warrant action.
4. Research Method
Discuss the Research Methodology (in general). Describe the variable or variables that are being analyzed. Identify the statistical test you will select to analyze these data and explain why you chose this test. Summarize your statistical alternative hypothesis. This section includes the following sub-sections:
a) Describe the Dataset
Example: The primary source of data will be HOSPITAL COMPARE MEDICARE DATA (citation). This dataset provides information on hospital characteristics, such as: Number of staffed beds, ownership, system membership, staffing by nurses and non-clinical staff, teaching status, percentage of discharge for Medicare and Medicaid patients, and information regarding the availability of specialty and high-tech services, as well as Electronic Medical Record (EMR) use (Describe dataset in 2-3 lines, Google the dataset and find the related website to find more information about the data).
Also, describe the sample size; for example, “The writer is using Medicare data-2013, this data includes 3000 obs. for all of the hospitals in the US.”
b) Describe Variables
Next, review the database you selected and select a variable or variables that are a “best-fit.” That is, choose a variable that quantitatively measures the concept or concepts articulated in your research question or hypothesis.
Return to your previously stated Research Question or Hypothesis and evaluate it considering the variables you have selected. (See the sample Table 1).
Table 1. List of variables used for the analysis
Description of data code
Total Hospital Beds
Total facility beds set up and staffed at the end of the reporting period
Source: UMGC, 2019
***Just in time information:
To cite a dataset, you can go with two approaches:
First, look at the note in the dataset for example;
Medicare National Data by County. (2012). Dartmouth Atlas of Health Care
Second, use the online citation, for example:
Zare, H., (2019, May). MN Hospital Report Data. Data posted in University of Maryland University College HMGT 400 online classroom, archived at http://campus.umgc.edu
See two examples describing the variables from Minnesota Data:
Table 2. Definition of variables used in the analysis
Total facility beds set up and staffed at the end of the reporting period
Source: UMGC, 2019
c) Describe the Research Method for Analysis
First, describe the research method as general (e.g., this is a quantitative method and then explain this method in about one paragraph. If you have this part in the introduction, you do not need to add it here).
Then, explain the statistical method you plan to use for your analysis (Refer to content in week 3 on Biostatistics for information on various statistical methods you can choose from).
Hypothesis: AZ hospitals are more likely to have lower readmission rates for PN compared to CA.
Research Method: To determine whether Arizona hospitals are more likely to have lower readmission rate than California, we will use a t-test, to determine whether differences across hospital types are statistically significant (You can change the test depends on your analysis).
d) Describe statistical package
Add one paragraph for the statistical package, e.g., Excel or RStudio.
Discuss your findings considering the following tips:
▪ Why you needed to see the distribution of data before any analysis (e.g., check for outliers, finding the best fit-test; for example, if the data had not a normal distribution, you can’t use the parametric test, etc., so just add 1 or 2 sentences).
▪ Did you eliminate outliers? (Please write 1 or 2 sentences, if applicable).
▪ How many observations do you have in your database and how many for selected variables, report % of missing.
▪ When you are finished with this, go for the next steps:
Present the results of your statistical analysis; include any relevant statistical information (summary tables, including N, mean, std. dev.). Make sure to completely and correctly name all your columns and rows, tables, and variables. For this part you could have at least 1-2 tables and 1-2 figures (depending on your variables bar-chart, pi-chart, or scatter-plot), you can use a table like this:
Table 3. Descriptive analysis to compare % of BL in Medicare beneficiary, MD vs. VA- 2013
Per of Lipid in MD
Per of Lipid in VA
Source: UMGC, 2019
When you have tables and plots ready, think about your finding and state the statistical conclusion. That is, do the results present evidence in favor or the null hypothesis or evidence that contradicts the null hypothesis?
6. Conclusion and Discussion
Review your research questions or hypothesis.
How has your analysis informed this question or hypothesis? Present your conclusion(s) from the results (presented above) and discuss the meaning of this conclusion(s) considering the research question or hypothesis presented in your introduction.
At the end of this section, add one or two sentences and discuss the limitations (including biases) associated with this analysis and any other statements you think are important in understanding the results of this analysis.
Include a reference page listing the bibliographic information for all sources cited in this report. This information should be consistent with the requirements specified in the American Psychological Association (APA) format and style guide.
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