Question

Answer the questions that follow the description of this case study. You can find the data in the attached excel file named "Case 1 data" The following description and datac Hebl, M., & Xu, J., "Weighing the care: Physicians' reactions to omes fromm the size of a patient," International Journal of Obesity, 25 (2001): 1246-1252 Overview Obese people face discrimination on a daily basis in employment, education, and relationship contexts. Past research has shown that even doctors, who are trained to treat all their patients warmly and have access to literature suggesting uncontrollable and hereditary aspects of obesity, believe obese individuals are undisciplined and suffer m controllability issues. This case study examines how doctors treat overweight as compared to normal weight patients. Various doctors at one of three major hospitals in the Texas Medical Center of Houston participated in the study. These doctors were sent a packet containing a medical chart similar to the one they view upon seeing a patient. This chart portrayed a patient who was displaying symptoms of a migraine headache but was otherwise healthy. This chart also contained a measure of the patient's weight. Doctors were randomly assigned to receive the chart of a patient who was overweight or the chart of a patient who was of normal weight. After reviewing the chart, the doctors then had to indicate how much time they believed they would spend with the patient. Questions to Answer Do doctors discriminate against overweight patients? Specifically, do the doctors who review charts of overweight patients say they would spend the same amount of time with their patients as the doctors who review charts of normal weight patients? DESCRIPTIONS OF VARIABLES VARIABLE Patient weight DESCRIPTION 1average weight, 2-overweight represents how long the doctors said they would spend with the patient me

Please answer the following three questions, I really need to study this for my final exam. Your help will be appreciated thank you in advance!

1. Does the data in each group seem to have a normal distribution? Explain how you can determine this.
2. What type of statistical test would you use to comparing the time spent with the average-weight patients as compared to the time spent with the overweight patients?
3. Perform the statistical test and describe all pertinent details of the test, including your final conclusion of significance.

Answer 1

Probability Plot of Average weight (mm), Over weight (mm) Normal-95% CI 0 15 30 45 60 Average weight (mm) Over weight (mm) Average weight (mm) 9.864 95 AD p-value Over weight (mm) L- 90 <0.005 I 80 24.74 9.653 38 70 50 AD し し- | 30 p-value 0.005 30 20 10 20 -1 0 15 30 45 60

From the above probability plots and p-values of AD test, we conclude that the data in each group do not seem to have normal distribution.

So for comparing the time spent with the average-weight patients as compared to the time spent with the overweight patients we use Mann-Whitney U test (a non parametric test).

Mann-Whitney Test and CI: Average weight (mm), Over weight (mm)

N Median
Average weight (mm) 33 30.000
Over weight (mm) 38 25.000

Point estimate for ETA1-ETA2 is 10.000
95.1 Percent CI for ETA1-ETA2 is (0.001,10.000)
W = 1427.0
Test of ETA1 = ETA2 vs ETA1 not = ETA2 is significant at 0.0060
The test is significant at 0.0040 (adjusted for ties)

Since p-value<0.05 so we conclude that the time spent with the average-weight patients is significantly different from the time spent with the overweight patients.