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

Author Question: How should the control group be selected? a) Control group should enroll in treatment for the ... (Read 119 times)

ss2343

  • Hero Member
  • *****
  • Posts: 548
on: Jun 22, 2018
How should the control group be selected?
 
  a) Control group should enroll in treatment for the characteristic of interest.
  b) Control group should vary randomly on the characteristic of interest.
  c) Control group should allow the investigator to isolate the characteristic of interest.
  d) Control group should allow the investigator to statistically control for the characteristic of interest.

Question 2

How might the selection of groups in observational studies affect the construct validity of the study?
 
  a) Populations sampled from might be too general.
  b) Populations sampled from might not be representative.
  c) Subjects' status on the characteristic of interest might vary systematically.
  d) Subjects might show random variation on other characteristics of interest.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

joechoochoy

  • Sr. Member
  • ****
  • Posts: 306
Reply #1 on: Jun 22, 2018
Answer to Question 1

Correct Answer: c

Answer to Question 2

Correct Answer: b


ss2343

  • Member
  • Posts: 548
Reply 2 on: Jun 22, 2018
Wow, this really help

recede

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Always store hazardous household chemicals in their original containers out of reach of children. These include bleach, paint, strippers and products containing turpentine, garden chemicals, oven cleaners, fondue fuels, nail polish, and nail polish remover.

Did you know?

Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

Did you know?

Hypertension is a silent killer because it is deadly and has no significant early symptoms. The danger from hypertension is the extra load on the heart, which can lead to hypertensive heart disease and kidney damage. This occurs without any major symptoms until the high blood pressure becomes extreme. Regular blood pressure checks are an important method of catching hypertension before it can kill you.

Did you know?

The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.

Treatment of Depression with Ketamine The graph shows the effects of ketamine on symptoms of depress Treatment of Depression with Ketamine The graph shows the effects of ketamine on symptoms of depress
Blood Group Identification by Antigen and Antibody Blood Group Identification by Antigen and Antibody
Sympathetic control of adrenal gland. Sympathetic control of adrenal gland.
Drugs Used in the Treatment of Hyperlipidemia Drugs Used in the Treatment of Hyperlipidemia
Vapor Densities of Selected Chemicals Vapor Densities of Selected Chemicals
Control of Respiration Control of Respiration
Video: Lower Limb Arteries Animation

For a complete list of videos, visit our video library