What is purpose of a control group in a case-control study

Assignment Help Other Subject
Reference no: EM131154963

A case control-study was conducted to examine the different risk factors (e.g. parent's education, family income, ethnicity, smoking, herbicides and solvents exposure, etc.) associated with leukemia among children. Investigators recruited cases of acute lymphoblastic leukemia among children in several hospitals in the Bay area. Controls were selected in the same hospitals as the cases. Controls included children diagnosed for other conditions or diseases than acute lymphoblastic leukemia and blood-related diseases.

a. What is the purpose of a control group in a case-control study?

b. What are the advantages and disadvantages of selecting this hospital-based control group?

c. The investigators decided to match the cases and controls for gender. Explain the reasons behind this decision in this particular study.

2. How is a case-control study different from a retrospective cohort study?

Reference no: EM131154963

Questions Cloud

What is the decay factor associated with the decrease : What is the decay factor associated with the decrease in the price to you? Write your answer in decimal form to the nearest thousandth.
Find the probability of the cases : A speaks truth in 80% of the cases and B speaks truth in 60% of the cases. Find the probability of the cases of which they are likely to contradict each other in stating the same fact
Is the following argument valid : Is the following argument valid? If valid, construct a formal proof, if not explain why. "If wages increases, then there will be inflation. The cost of living will not increase if there is no inflation
Find the volume of the solid that lies : Find the volume of the solid that lies under the paraboloid z=x^2 + 4y^2 and above the region D in xy-plane bounded by the line y=3x and the parabola y=3x^2.
What is purpose of a control group in a case-control study : What are the advantages and disadvantages of selecting this hospital-based control group? The investigators decided to match the cases and controls for gender. Explain the reasons behind this decision in this particular study.
Find the spanning tree for the graph : Apply depth-first-search to find the spanning tree for the following graph with vertex d as the starting vertex
Company make their maximum profit : The profit of a company can be modeled by the polynomial function P(t)=-t^3+12t^2-21t+10, where P is the profit, in thousands of dollars, and t is the time, in years. When will the company make their maximum profit of $108 000? Show all work pleas..
Find the -6 db width of the envelope of a time pulse : Find the -6 dB width of the envelope of a time pulse and the two end frequencies needed to scan a 1 mm thick slice from -15 cm to +15 cm around an isocenter on the z axis. Assume Gz = 0:5 T=m.
Analyze various processes within each of behaviorism theory : Behaviorism, social cognitive theory, and information processing theory all have processes that affect self-regulated learning. Analyze the various processes within each of these three learning theories from a self-regulation perspective and reco..

Reviews

Write a Review

Other Subject Questions & Answers

  Medication to help with itching of seasonal allergies

The patient is also given another medication to help with the itching of seasonal allergies. The instructions are to take ½ of a tablet before breakfast, lunch and dinner for 10 days. How many scored tablets should the patient expect to receive?

  Arguments based on validity, soundness and strength

Identify whether or not it was inductive or deductive and evaluate it for quality

  What other class members and businesses can learn

I then want a subjective analysis of what you think, what could have been done or what should be done, what other class members and businesses can learn from this case. Give your recommendations, predictions, etc.

  Introduced to the moral theory of utilitarianism

You have been introduced to the moral theory of utilitarianism. One of the most prominent philosophers who prescribe to this theory, Peter Singer, argues for better treatment of animals and equal moral consideration for them

  Severe erosion catergory

Which coast of the united states (north,south,east,or west ) has the least problem with severe erosion? Which great lake has the highest percentage of u.s shore in the severe erosion catergory?

  Should the united states accept international criminal case

Write a two page paper answering the question "Should the United States Accept the International Criminal Court?" Also talk about the United States and the International Court (2009) Brett D. Shaefer and also include The case for the International..

  Employers look for is the ability to solve problems

Problem Solving Skills and Application: One of the top things that employers look for is the ability to solve problems. This module will present a few popular problem solving ideas and then give you some case studies on how to apply these new skills.

  Draw a plate tectonics diagram

1. Be able to draw a plate tectonics diagram. For each item you should be able to give a short description of what it is, and/or what is happening.

  Biblical view of war and war theory

Which war in American history, other than the American War for Independence, most closely follows the biblical view of war and Just War Theory? Why or why not?

  Prespecified level of transportation services

What is a free trade zone? What functions might be performed in it?

  What advantage do traditional media have over emerging media

If you are a reporter with access to all forms of media distribution, which do you choose first to tell a story? Why? Explain how you might have answered this question differently 20 years ago.

  Security of debt-collateral and debtor defaults

When a debt is secured by property as collateral and the debtor defaults, the creditor may: A) take possession of the property and retain it in full satisfaction of the debt. B) take possession of the property and sell it. C) not take possession of t..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd