Which of the following are the two main threats to the validity of a meta-analysis?
A) Poor quality of included studies and publication bias
B) Poor quality of included studies and information bias
C) Publication bias and information bias
D) Information bias and assessment bias

Question

Quizplus · Accepted Answer

Poor quality of included studies can lead to unreliable results, and publication bias can skew the findings by over-representing positive results.

Which of the Following Are the Two Main Threats to the Validity