An HTML attachment was scrubbed... URL: <https://stat.ethz.ch/pipermail/r-sig-meta-analysis/attachments/20210119/04cee2e5/attachment.html> -------------- next part -------------- A non-text attachment was scrubbed... Name: DN_2020_Shoulder.xlsx Type: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet Size: 9383 bytes Desc: not available URL: <https://stat.ethz.ch/pipermail/r-sig-meta-analysis/attachments/20210119/04cee2e5/attachment.xlsx> -------------- next part -------------- A non-text attachment was scrubbed... Name: DN_Adhoc_ex.R Type: application/octet-stream Size: 1288 bytes Desc: not available URL: <https://stat.ethz.ch/pipermail/r-sig-meta-analysis/attachments/20210119/04cee2e5/attachment.obj>
[R-meta] Meta package - adhoc CI correction
2 messages · Tobias Saueressig, Guido Schwarzer
Dear Tobias, Ouch, this is a bug in meta, version 4.16-0. I just submitted version 4.16-1 to CRAN which should be available later today. Please note, the following changes concerning the Hartung-Knapp ad hoc methods in version 4.16-0: - argument 'adhoc.hakn = "iqwig6"' instead of 'adhoc.hakn = "ci"' uses the ad hoc method for Hartung-Knapp method described in General Methods 6.0 (IQWiG, 2020) - argument 'adhoc.hakn = "ci"' uses the ad hoc method described in Jackson et al. (2017) I guess your friend still has version 4.15-1 of meta and thus argument 'adhoc.hakn = "ci"' worked for him / her as this is the IQWiG method. Being a co-author of Jackson et al. (2017), it is quite embarrassing to provide a buggy version of this ad hoc method (my only justification is that I misread the description in van Aert and Jackson, 2019, p. 525). See the attached R code for a summary of the various methods for your example and two variants. The R code only works with meta, version 4.16-1 due to a minor change in metabind(). Best wishes, Guido References: IQWiG. General Methods: Draft of Version 6.0 [Internet]. 2020. Available from: https://www.iqwig.de/en/methods/methods-paper.3020.html <https://www.iqwig.de/en/methods/methods-paper.3020.html> Jackson D, Law M, R?cker G, Schwarzer G. The Hartung-Knapp modification for random-effects meta-analysis: A useful refinement but are there any residual concerns? Stat Med. 2017;36:3923?34. Aert RCM van, Jackson D. A new justification of the Hartung-Knapp method for random-effects meta-analysis based on weighted least squares regression. Research Synthesis Methods. 2019;10(4):515?27. 1. IQWiG. General Methods: Draft of Version 6.0 [Internet]. 2020. Available from: https://www.iqwig.de/en/methods/methods-paper.3020.html <https://www.iqwig.de/en/methods/methods-paper.3020.html> -------------- next part -------------- An embedded and charset-unspecified text was scrubbed... Name: DN_Adhoc_ex.R URL: <https://stat.ethz.ch/pipermail/r-sig-meta-analysis/attachments/20210119/32ee6c74/attachment.ksh>