Funnel Plots and Publication Bias
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Questions and Answers

What does the first funnel plot indicate about publication bias?

  • There is a large publication bias.
  • There is a slight positive bias present.
  • There is a negative bias affecting the results.
  • There is no publication bias. (correct)

    • How are study points distributed in the second funnel plot?

  • They all fall in the lower left quadrant.
  • They form a straight line.
  • They are scattered randomly.
  • They cluster toward larger effect sizes. (correct)

    • What is a characteristic of the third funnel plot in relation to bias?

  • There is evidence of publication bias. (correct)
  • All studies show no effect.
  • Points are concentrated in the lower left quadrant.
  • There is no clustering of points.

    • What effect size is represented in the first funnel plot?

    <p>Effect size equals 0.</p> Signup and view all the answers

    What does a symmetrical distribution of points in a funnel plot typically indicate?

    <p>No publication bias exists.</p> Signup and view all the answers

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