NHS8070 2020 October Unit 4 Discussion Latest

NHS8070 Evaluation and Interpretation of Data in Health Care

Unit 4 Discussion            

DQ1 Explaining the Impact of Sampling on Statistical Analysis

In preparation for this unit’s statistical analysis practice and the unit assignment, you will have an opportunity to explore some basic statistical concepts that involve the sample.

The Emotional Well-Being data set is based on a fictional study in which a researcher was interested in determining if a vegetarian diet was a beneficial to the well-being of people living in Alaska, as was found in other research locations where sun exposure was greater.

Based on previous publications, the researcher selected the Short Form Health Survey (SF-36) as the instrument for measuring the efficacy of the different dietary treatments. The current data set recruited a fairly large number of participants (n=72) to answer this question.

Instructions

For this post, refer to the guidelines in the FEM and use the provided data set linked in Resources to complete the following:

Create two smaller samples (n=10 and n=5) from the original Emotional Well-Being population data setusing SPSS's Stratified Random Sampling tool.

Performadescriptiveanalysisofthekey variables in each of these new data sets(variables:BaselineSF-36Well-BeingScore, Post-Tx Well-Being Score,BMI, Age)and compare your resultsto the original,larger data set's descriptive analysis results.Report your findings.

Use this unit’s resources to help youexplain your results in terms of differences in sampling error, sample representativeness, descriptive statistical estimates with related confidence interval, and power.

Speculate as to what would have happened were the sample size smaller.

Describe one or two of the challenges you found while performing these exercises and how you resolved the issues. Where appropriate, provide the address of any website that helped you.

Response Guidelines

Read and respond to the posts of your peers according to the guidelines in the FEM.

Address one of more of the following in your response:

How do the challenges and resolutions of your peers compare to yours?

How did your findings regarding sampling error, sample representativeness, confidence, etc., compare to your peers?

Learning Components

This activity will help you achieve the following learning components:

Prepare data for analysis.

Set up a dataset using a survey.

Identify the influence of sample size and influence of effect size.

Identify sampling methods and the difference between populations and samples.

Analyze the analytical testing approach in a quantitative study.

Write about statistical concepts clearly, accurately, and professionally.

Resources

Discussion Participation Scoring Guide.

Emotional Well-Being (SF-36) Study Data Set [XLSX].