The Cardiac.mtw Minitab file is from a study which was conducted to determine whether a drug called “Dobutamine” could be used effectively in a test for measuring a patient’s risk of having a heart attack. For younger patients, a typical test of this risk is called “Stress Echocardiography” which involves raising the patient’s heart rate by exercise and then taking various measurements, such as heart rate and blood pressure. This test cannot be used on older patients where their bodies cannot take the stress of hard exercise. The key to assessing risk, however, is putting stress on the heart before taking the relevant measurements. While exercise can’t be used to create this stress for older patients, the drug Dobutamine can. This study was used to see whether the stress echocardiography test was still effective in predicting cardiac events when the stress on the heart was produced by Dobutamine instead of exercise.
Source: Garfinkel, Alan, et. al. “Prognostic Value of Dobutamine Stress Echocardiography in Predicting Cardiac Events in Patients With Known or Suspected Coronary Artery Disease.” Journal of the American College of Cardiology 33.3 (1999) 708-16.
Some of the variables of interest recorded in Cardiac.mtw are:
Variable Name Variable Description
ID Patient identifying number
BHR Basal heart rate (beats per minute)
BBP Basal blood pressure (beats per minute)
Dose Dose of Dobutamine given (ml)
MaxHR Maximum heart rate (beats per minute)
MaxBP Maximum blood pressure (beats per minute)
Age Patient’s age
Sex Patient’s gender (male = 0, female = 1))
ChestPain The patient experienced chest pain (0 = no, 1 = yes)
HDiabetes The patient has a history of diabetes (0 = no, 1 = yes)
HSmoking The patient has a history of smoking (0 = no, 1 = yes)
Use the Minitab worksheet to answer the questions on the following page. Follow the instructions below in your answers:
· Where a question asks for a percentage, the answer should be expressed as a value between 0% and 100%. Where a question asks for a proportion, the answer should be expressed as a value between 0 and 1. Give answers to the number of decimal places specified in each part.
· Descriptive statistics for parts i. and j. can be calculated in Minitab but you will need to select the appropriate statistics from the Statistics option after selecting Display Descriptive Statistics.
· For part k., ensure that all Minitab output has is clearly labelled (ie. Group 1, 2, 3 and 4 are not informative labels).
a. How many of the patients in the study experienced chest pain? (integer)____________
b. How many of the females in the study experienced chest pain? (integer)____________
c. What percentage of the patients had a history of smoking? (2dp)__________________
d. What percentage of the males had a history of smoking? (2dp)____________________
e. What proportion of the subjects had both a history of diabetes and a history of smoking? (2dp)__________________________________________________________
Question 4 continued
f. What was the mean basal heart rate of the subjects in the study (2dp)____________
g. What was the median age of the patients who experienced chest pain (2dp)__________
h. What was the standard deviation of the maximum heart rates recorded on the males in the study (2dp)__________________________________________________________
i. What was the range of ages for the subjects who were given the highest dose of Dobutamine? (integer)_____________________________________________________
j. What was the interquartile range of the maximum blood pressures recorded on the subjects who were given the second highest dost of Dobutamine? (2dp)______________
k. Consider the research question:
Are patients with a history of diabetes more likely to experience chest pain?
Use Minitab to construct appropriate graphical and numerical summaries to address this research question. Use your summaries to comment on the research question.
Why Choose Us
At Myhomeworkwriters.com, we always aim at 100% customer satisfaction. As such, we never compromise o the quality of our homework services. Our homework helpers ensure that they craft each paper carefully to match the requirements of the instruction form.
Professional Academic Writers
With Myhomeworkwriters.com, every student is guaranteed high-quality, professionally written papers. We ensure that we hire individuals with high academic qualifications who can maintain our quality policy. These writers undergo further training to sharpen their writing skills, making them more competent in writing academic papers.
Our company maintains a fair pricing system for all academic writing services to ensure affordability. Our pricing system generates quotations based on the properties of individual papers.
My Homework Writers guarantees all students of swift delivery of papers. We understand that time is an essential factor in the academic world. Therefore, we ensure that we deliver the paper on or before the agreed date to give students ample time for reviewing.
Myhomeworkwriters.com maintains a zero-plagiarism policy in all papers. As such, My Homework Writers professional academic writers ensure that they use the students’ instructions to deliver plagiarism-free papers. We are very keen on avoiding any chance of similarities with previous papers.
Customer Support 24/7
Our customer support works around the clock to provide students with assistance or guidance at any time of the day. Students can always communicate with us through our live chat system or our email and receive instant responses. Feel free to contact us via the Chat window or support email: email@example.com.
Try it now!
How it works?
Follow these simple steps to get your paper done
Place your order
Fill in the order form and provide all details of your assignment.
Proceed with the payment
Choose the payment system that suits you most.
Receive the final file
Once your paper is ready, we will email it to you.
Our Homework Writing Services
My Homework Writers holds a reputation for being a platform that provides high-quality homework writing services. All you need to do is provide us with all the necessary requirements of the paper and wait for quality results.
At My Homework Writers, we have highly qualified academic gurus who will offer great assistance towards completing your essays. Our homework writing service providers are well-versed with all the aspects of developing high-quality and relevant essays.
Admission and Business Papers
With Myhomeworkwriters.com, we will help you secure a position at your desired institution. Our essay writing services include the crafting of admissions papers. We will still help you climb your career ladder by helping you write the official papers that will help you secure a job. We will guide you on how to write an outstanding portfolio or resume.
Editing and Proofreading
Myhomeworkwriters.com has a professional editorial team that will help you organize your paper, paraphrase it, and eliminate any possible mistakes. Also, we will help you check on plagiarism to ensure that your final paper posses quality and originality.
My Homework Writers harbors professional academic writers from diverse academic disciplines. As such, we can develop homework writing services in all academic areas. The simplicity or complexity of the paper does not affect the quality of homework writing services.