Question

Q1) A study was done comparing the effectiveness of exercise vs medication on lowering blood pressure...

Q1) A study was done comparing the effectiveness of exercise vs medication on lowering blood pressure in patients with high blood pressure. Two hundred subjects were randomly assigned to two groups. One group was instructed to exercise according to a strict schedule, and the other group was given medication to take. After 3 months, the researchers compared the change in blood pressure between the groups and found that the exercise groups experienced a greater drop in blood pressure on average. Explain why a blind study is not possible in this situation

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Please don't hesitate to give a "thumbs up" for the answer in case the answer has helped you

Definition of Blind study: A study done in such a way that the patients or subjects do not know (is blinded as to) what treatment they are receiving to ensure that the results are not affected by a placebo effect (the power of suggestion).

Without telling the groups what would they be doing i.e. Exercising or taking medication the group will not know they group would be in. Hence, the experiment is not possible without actually informing the participants which group are they assigned to.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
A study was done comparing the effectiveness of exercise vs medication on lowering blood pressure in...
A study was done comparing the effectiveness of exercise vs medication on lowering blood pressure in patients with high blood pressure. Two hundred subjects were randomly assigned to two groups. One group was instructed to exercise according to strict schedule, and the other group was given medication to take. After 3 months, the researchers compared the change in blood pressure between the groups and found that the exercise groups experienced a greater drop in blood pressure on average. a. Is...
Exercise and diet are being studied as possible substitutes for medication to lower blood pressure. Three...
Exercise and diet are being studied as possible substitutes for medication to lower blood pressure. Three groups of subjects will be used to study the effect of exercise. Group 1 is sedentary, while group 2 walks and group 3 swims for 1 hour a day. Half of each of the three exercise groups will be on a salt-free diet. An additional group of subjects will not exercise or restrict their salt, but will take the standard medication. Use Z for...
A doctor wants to know if a blood pressure medication is effective in lowering blood pressure....
A doctor wants to know if a blood pressure medication is effective in lowering blood pressure. Six subjects have their blood pressures recorded. After twelve weeks on the medication, the same six subjects have their blood pressure recorded again. For this test, only systolic pressure is of concern. Patient A B C D E F Before 161 162 165 162 166 171 After 158 159 166 160 167 169 Write Ho and Ha Is this a right, left, or two-tailed...
In a randomized comparative experiment on the effect of calcium in the diet on blood pressure,...
In a randomized comparative experiment on the effect of calcium in the diet on blood pressure, researchers divided 54 healthy white males at random into two groups. One group received calcium while the other received a placebo. At the beginning of the study, the researchers measured many variables on the subjects. The paper reporting they study gives x̅ = 114.9 and s = 9.3 for the seated systolic blood pressure of the 27 members of the placebo group. Give a...
Researchers want to test the effectiveness of a new anti-anxiety medication. Three hundred eighty patients were...
Researchers want to test the effectiveness of a new anti-anxiety medication. Three hundred eighty patients were recruited to participate in the clinical trial and were randomly assigned to two groups, of which one received the medication, and the other, a placebo. In clinical testing, 64 out of 200 people taking the medication reported symptoms of anxiety. Of the other 180 people receiving a placebo, 88 reported symptoms of anxiety. Do you think if the patients in the two groups performed...
Suppose a study is being designed to measure the effect, on systolic blood pressure, of lowering...
Suppose a study is being designed to measure the effect, on systolic blood pressure, of lowering sodium in the diet. From a pilot study it is observed that the standard deviation of systolic blood pressure in a community with a high sodium diet is 12 mmHg while that in a group with a low sodium diet is 10.3 mmHg. If a=0.05 and b=0.10, how large a sample from each community should be selected if we want to be able to...
A serum cholesterol level above 250 mg/dl of blood is a risk factor for cardiovascular disease...
A serum cholesterol level above 250 mg/dl of blood is a risk factor for cardiovascular disease in humans.  At a medical center in St. Louis, a study to test the effectiveness of new cholesterol-lowering drug was conducted.  One hundred people with cholesterol levels between 250 mg/dl and 300 mg/dl were available for this study.  Fifty people were assigned at random to each of two treatment groups.  One group received the standard cholesterol-lowering medication and the other group received the new drug.  After taking the drug...
About 480 women took part in a study about the effects of hormone therapy on middle-aged...
About 480 women took part in a study about the effects of hormone therapy on middle-aged women; the women were grouped together in groups of two based on their similarities in height, weight, age, etc. Then one person in each group was randomly assigned to hormone therapy, while the other person was assigned to a placebo (they did not know which). After about a year, blood tests were conducted on each subject by a lab technician who was aware of...
Researchers comparing the effectiveness of two pain medications randomly selected a group of patients who had...
Researchers comparing the effectiveness of two pain medications randomly selected a group of patients who had been complaining of a certain kind of joint pain. They randomly divided these people into two groups, and then administrated the pain killer. Of the 112 people in the group who received medication A, 84 said this pain reliever was effective. Of the 108 people in the other group, 66 reported that pain reliever B was effective. Write a 95% confidence interval for the...
A doctor wants to test the effectiveness of a new treatment for a particular illness. For...
A doctor wants to test the effectiveness of a new treatment for a particular illness. For the study, 200 people are randomly divided into two groups, where 100 people are given a placebo and the other 100 are given the new drug. Neither the researchers nor the patients know which group the patients are in since the drug and placebo had identical appearance and packaging. With the exception of the drug, all patients experienced the same diet and amount of...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT