« previous next »

Author Question: Why do we characterize a meta-analysis as being an observational study (versus an ... (Read 23 times)

olgavictoria

  • Hero Member
  • *****
  • Posts: 528
on: Jul 24, 2018
Why do we characterize a meta-analysis as being an observational study (versus an experiment)?

Question 2

Name three possible problems with meta-analysis.


ecox1012

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 24, 2018
Answer to Question 1

THE VARIOUS TREATMENTS CANNOT BE RANDOMLY ASSIGNED ACROSS STUDIES; CONFOUNDING VARIABLES MOST LIKELY EXIST.

Answer to Question 2

ANY THREE OF THE FOLLOWING ARE OK: 1) SIMPSON'S PARADOX; 2) CONFOUNDING VARIABLES; 3) SUBTLE DIFFERENCES IN TREATMENTS OF THE SAME NAME; 4) THE FILE DRAWER PROBLEM; 5) BIASED OR FLAWED ORIGINAL STUDIES; 6) STATISTICAL SIGNIFICANCE VERSUS PRACTICAL IMPORTANCE; 7) FALSE FINDINGS OF NO DIFFERENCE.'


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Palade's use of the pulse-chase method to study protein secretion Palade's use of the pulse-chase method to study protein secretion
Body temperature and environmental temperature in homeotherms versus heterotherms. Body temperature and environmental temperature in homeotherms versus heterotherms.
Pedigree Analysis and Inheritance Pedigree Analysis and Inheritance
Normal bone versus bone with osteoporosis. Normal bone versus bone with osteoporosis.
Adults in the Berlin Study of Aging show earlier declines on tests of nonverbal, fluid tasks (upper ... Adults in the Berlin Study of Aging show earlier declines on tests of nonverbal, fluid tasks (upper ...
Bayesian Analysis of the Genotype of II-2 in Figure A.4 Bayesian Analysis of the Genotype of II-2 in Figure A.4
Video: Olfaction. or the sense of smell

For a complete list of videos, visit our video library