Question

SCENARIO:In an outpatient clinic, a nurse practitioner observes a high prevalence of obesity in young female...

SCENARIO:In an outpatient clinic, a nurse practitioner observes a high prevalence of obesity in young female patients. The nurse practitioner further observes that there appears to be an association between the economic status of the patient and their obesity. The nurse practitioner reviews the related literature but does not find a study that directly relates obesity and economic status. The nurse practitioner decides to conduct a study to determine if a relationship exists between obesity in younger females, ages 15 to 18 years, and their economic status. The nurse practitioner elicits help from four outpatient clinics and receives data on the Body Mass Index (BMI) for all female patients from age 15 to 18 years. The nurse practitioner also attains information concerning if the patient is above or below the federal poverty line for their respective family. The nurse practitioner uses a bivariate correlation between BMI and the dichotomous variable of economic status. The results did not reflect a statistically significant relationship.

Questions:

a) What kind of study is this according to the methodology used? Justify your choice.

b) Write a research hypothesis/hypotheses or question(s) for this study and identify the variables in the study.

c) Critique the internal and external validity of the study as it is designed.

d) Critique the data analyses used in the study.

e) If you were going to conduct this study, how would you redesign to enhance its validity and at the same time make it reasonable to conduct in a outpatient clinical setting?  In your redesign be sure to address the appropriateness of the tests used to measure the outcomes of the study and the statistical procedure(s) that you would use to analyze data.

Homework Answers

Answer #1

A) The observational methodology has been here.. Observational studies use samples to draw conclusions about a population when the researchers do not control the treatment, or independent variable, that relates to the primary research question. In this case the nurse records the data about subjects without applying any treatment to subjects.

B) Here the

(Null hypothesis) Ho= Relationship does not exists between obesity and economic status.

(Alternate hypothesis) Ha=  Relationship exists between obesity and economic status.

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