Question

study was recently conducted on a large number of subjects to determine the effectiveness of aspirin...

    1. study was recently conducted on a large number of subjects to determine the effectiveness of aspirin for reducing the risk of a heart attack. The subjects were divided into two treatment groups: 11,037 subjects were asked to take a regular dose of aspirin and 11,032 subjects were given a placebo to take instead of aspirin. At the end of the study, 104 of the subjects who took aspirin had a heart attack and 190 of the subjects who took the placebo had a heart attack.
  2. Prepare a contingency table to summarize the results of this study.

Treatment

Heart Attack

No Heart Attack

Total

Aspirin

Placebo

Total
  1. Use the table from question (a) to find the proportion of subjects in each treatment group that had a heart attack and the proportion that didn’t have a heart attack.
  2. What conclusions can we make about the effectiveness of aspirin for reducing the risk of having a heart attack?
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

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
In the 1980’s, a clinical trial was conducted to determine if taking an aspirin daily reduced...
In the 1980’s, a clinical trial was conducted to determine if taking an aspirin daily reduced the incidence of heart attacks. Of 22,071 medical doctors participating in the study, 11,037 were randomly assigned to take aspirin and 11,034 were randomly assigned to the placebo group. Doctors in this group were given a sugar pill disguised to look like aspirin. After six months, the proportion of heart attacks in the two groups was compared. Only 104 doctors who took aspirin had...
A researcher conducted a study to determine if aspirin reduces the chance of a heart attack....
A researcher conducted a study to determine if aspirin reduces the chance of a heart attack. He randomly assigned 250 patients to take aspirin every day and 250 patients to take a placebo every day. After a certain length of time he reported the number of heart attacks in the patients who took aspirin every day and in those who did not take aspirin every day. What is the most important reason for the researcher to randomly assign patients to...
The Physicians' Health Study randomly assigned 22,071 healthy male physicians at least 40 years old to...
The Physicians' Health Study randomly assigned 22,071 healthy male physicians at least 40 years old to take either an aspirin every other day or a placebo pill every other day. Of the 10957 physicians who took aspirin regularly for 5 years, 10 had a fatal heart attack and 128 had a nonfatal heart attack. Of the 11114 who took the placebo, 32 suffered a fatal heart attack and 221 had a nonfatal heart attack. Please use 4 decimal places to...
The Physicians' Health Study randomly assigned 22,071 healthy male physicians at least 40 years old to...
The Physicians' Health Study randomly assigned 22,071 healthy male physicians at least 40 years old to take either an aspirin every other day or a placebo pill every other day. Of the 10825 physicians who took aspirin regularly for 5 years, 13 had a fatal heart attack and 131 had a nonfatal heart attack. Of the 11246 who took the placebo, 26 suffered a fatal heart attack and 223 had a nonfatal heart attack. Please use 4 decimal places to...
A study used 1259 patients who had suffered a stroke. The study randomly assigned each subject...
A study used 1259 patients who had suffered a stroke. The study randomly assigned each subject to an aspirin treatment or a placebo treatment. During a 3-year follow-up period, in Sample 1, 634 people received placebo treatments and 25 people died from heart attack. In sample 2, 625 people received aspirin treatment and 18 died from heart attack. Let p1 denote the population proportion of death from heart attack for those with no treatment and p2 denote the population proportion...
8. Calcium blockers are among several classes of medicines commonly prescribed to relieve high blood pressure....
8. Calcium blockers are among several classes of medicines commonly prescribed to relieve high blood pressure. A study in Denmark has found that calcium blockers may also be effective in reducing the risk of heart attacks. A total of 897 randomly selected Danish patients, each recovering from a heart attack, were given a daily dose of the drug Verapamil, a calcium blocker. After eighteen months of follow-up, 146 of these patients had recurring heart attacks. In a control group of...
A study was conducted to test whether use of antibiotics protects against the risk of a...
A study was conducted to test whether use of antibiotics protects against the risk of a first-time heart attack (myocardial infarction). Patients diagnosed with a first-time myocardial infarction between 1992 and 1997 were identified from 350 general practices in the United Kingdom. For each patient diagnosed with a first-time myocardial infarction, 4 patients with no history of myocardial infarction who were the same age and sex were selected from the patients of the same general practices. For all study participants,...
Subjects with pre-existing cardiovascular symptoms who were receiving subitramine, an appetite suppressant, were found to be...
Subjects with pre-existing cardiovascular symptoms who were receiving subitramine, an appetite suppressant, were found to be at increased risk of cardiovascular events while taking the drug. The study included 9801 overweight or obese subjects with pre-existing cardiovascular disease and/or type 2 diabetes. The subjects were randomly assigned to subitramine (4906 subjects) or a placebo (4895 subjects) in a double-blind fashion. The primary outcome measured was the occurrence of any of the following events: nonfatal myocardial infarction or stroke, resuscitation after...
An experiment was conducted for better understanding of the effectiveness of a particular type of drug...
An experiment was conducted for better understanding of the effectiveness of a particular type of drug for reducing bad cholesterol (LDL) level. The purpose of the experiment was to determine whether different dosages used have significant different outcomes in average LDL reduction. Twenty subjects with LDL at around 250 to 300 mg/dL had participated in the study and were randomly divided into four groups. Each group was given a specific level of dosage of the drug each day for one...
An experiment was conducted for better understanding of the effectiveness of a particular type of drug...
An experiment was conducted for better understanding of the effectiveness of a particular type of drug for reducing bad cholesterol (LDL) level. The purpose of the experiment was to determine whether different dosages used have significant different outcomes in average LDL reduction. Twenty subjects with LDL at around 250 to 300 mg/dL had participated in the study and were randomly divided into four groups. Each group was given a specific level of dosage of the drug each day for one...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT