« previous next »

Author Question: Why do we characterize a meta-analysis as being an observational study (versus an ... (Read 17 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?

Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

Medication errors are more common among seriously ill patients than with those with minor conditions.

Sitting versus walking Sitting versus walking
Bryan versus McKinley, 1896 Bryan versus McKinley, 1896
The Abecedarian study was designed to help very low-income African American children prepare for ... The Abecedarian study was designed to help very low-income African American children prepare for ...
Swot analysis Swot analysis
The steps in the process of creating a karyotype for chromosome analysis. The steps in the process of creating a karyotype for chromosome analysis.
Emerson’s Three-Point Test-Cross Analysis Emerson’s Three-Point Test-Cross Analysis
Video: Diversity of Living Creatures - Charles Darwin & the Beagle's Voyage

For a complete list of videos, visit our video library