This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A prospective study on the relationship between sleep deprivation and heart disease was done by ... (Read 31 times)

soccerdreamer_17

  • Hero Member
  • *****
  • Posts: 552
on: Jul 24, 2018
A prospective study on the relationship between sleep deprivation and heart disease was done by Ayas, et. al. (Arch Intern Med 2003). Women who slept 6 hours a night were compared to women who slept for 8 hours a night (reference group). After adjusting for potential confounding variables like smoking, a 95 confidence interval for the relative risk of heart disease was (0.98, 1.42). Based on this confidence interval, state what the association between sleep deprivation and heart disease is.

Question 2

At a small college somewhere on the East coast, 20 of the girls and 30 of the boys smoke at least once a week. Independent random samples of 75 girls and 100 boys are to be selected and the proportions of smokers in the samples are to be calculated. What is probability that the sample proportion of girl smokers is greater than the sample proportion of boy smokers?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

tjayeee

  • Sr. Member
  • ****
  • Posts: 329
Reply #1 on: Jul 24, 2018
Answer to Question 1

There is no conclusive evidence, based on this study, that the association (as measured by relative risk) is different from 1 (equal risk).

Answer to Question 2

0.0623


soccerdreamer_17

  • Hero Member
  • *****
  • Posts: 552
Reply #2 on: Jul 24, 2018
Both answers were spot on, thank you once again


tjayeee

  • Sr. Member
  • ****
  • Posts: 329
Reply #3 on: Jul 24, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Valves of the heart. Valves of the heart.
Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r Photograph of the flea that transmits Yersinia pestis to cause bubonic plague, called the oriental r
Inverse Relation Between IQ and Disease. Could this explain the Flynn effect? Inverse Relation Between IQ and Disease. Could this explain the Flynn effect?
This map shows the percentage of Protestants by state in Germany. When compared to the previous map This map shows the percentage of Protestants by state in Germany. When compared to the previous map
Candidates for jobs are sometimes rejected when the prospective employer finds negative images or ... Candidates for jobs are sometimes rejected when the prospective employer finds negative images or ...
Valves of the heart Valves of the heart
Video: Autonomic Nervous System Animation

For a complete list of videos, visit our video library