Question 8: How could we check for any evidence of publication bias?
To do this we must click "Return to table" again. There is an option "Analyses" at the top of the screen. This contains the option "Publication bias"
I got this funnel plot:
This looks quite symmetrical, so there is nothing here to suggest publication bias.
Clicking "Table" gives a large number of analyses which have been proposed to test for publication bias.
I clicked "next table" until I came to the Begg and Mazumdar rank correlation, as covered in the lectures. I chose the bottom P value, which is 0.46551, i.e. P = 0.5, no evidence of any publication bias.
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