Bias

Question 1

What are the 4 different types of reporting biases for statistically “positive” results?

Answer 1

Publication bias
Time lag bias
Language bias
Citation bias

Question 2

What is publication bias?

Answer 2

If there is positive statistical significance between the two groups (e.g. powered vs. manual toothbrush), the study is more likely to be PUBLISHED.

Question 3

What is time lag bias?

Answer 3

When a study is more likely to be published more quickly if the results are more exciting - positive effect more likely to be published than null effect

Question 4

What does bias do in a systematic review?

Answer 4

Bias determines the extent to which results of studies can be believed

Question 5

What are the components of risk of bias assessment for trials (RCT)?

SABIS

Answer 5

Sequence generation
Allocation concealment
Blinding
Incomplete outcome data
Selective outcome reporting