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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: J Epidemiol Community Health. 2010 Nov 4;65(2):177–189. doi: 10.1136/jech.2009.095901

Appendix B.

Appendix B

Publication bias assessment: Begg’s funnel plot and Begg’s test1

1Using Fisher’s transformed correlation coefficient with its SE per study datapoint, aggregating datapoints means per study to assess publication bias. N=15 studies. Continuity corrected Begg’s test is presented.