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8 results for “from:Tommy van Steen”

[R-meta] Significance of the individual effects
Tommy van Steen · Sep 24, 2018 · r-sig-meta-analysis

Hi Cesar, I?m not sure why you do the ?exp? bit, as removing that bit gives the right lower limits compared to a simple forest plot produced using the metafor-package. Your ifelse function will only work if all...

[R-meta] Moderator analysis with missing values (Methods and interpretations)
Tommy van Steen · Sep 11, 2018 · r-sig-meta-analysis

Hi Wolfgang and Michael, Thank you for your quick responses and help. Regarding your (Michael) question about clarification, I have a total of 51 comparisons. The individual testing of moderators is done on all studies for which that moderator is...

[R-meta] Meta-analysis of single group attitude scores
Tommy van Steen · Nov 24, 2017 · r-sig-meta-analysis

Dear all, I have a question about my meta-analytic approach in a project that I?m working on. In this project, we are conducting a meta-analysis of attitudes. The study outcome variable is the mean attitude score on...

[R-meta] Moderator analysis with missing values (Methods and interpretations)
Tommy van Steen · Sep 11, 2018 · r-sig-meta-analysis

Dear Wolfgang, I have a follow-up question regarding the point of doing a side-by-side comparison of moderator analysis (testing moderators both individually and as part of a model that includes all moderators). Looking at the significant moderators...

[R-meta] Moderator analysis with missing values (Methods and interpretations)
Tommy van Steen · Jul 9, 2018 · r-sig-meta-analysis

Hi Wolfgang, Thank you for the helpful and clear responses! The visualisation of the moderators in the scatterplot makes a lot of sense, as does the side by side comparison of moderators individually/together. Best wishes, Tommy > On 6 Jul...

[R-meta] Moderator analysis with missing values (Methods and interpretations)
Tommy van Steen · Jul 6, 2018 · r-sig-meta-analysis

Hi all, I?m running a meta-analysis using Cohen?s d in the metafor-package for R. I?m doubting my method/interpretation of results at various stages. As I want to make sure I?m doing it right...

[R-meta] Meta-analysis of single group attitude scores
Tommy van Steen · Jan 17, 2018 · r-sig-meta-analysis

Hi Wolfgang, Thanks for explaining this, it?s much clearer to me now. Best wishes, Tommy =============== Dr Tommy van Steen Research Associate in Psychology University of Bath > On 16 Jan 2018, at 17:34, Viechtbauer Wolfgang (SP) <wolfgang.viechtbauer at...

[R-meta] Meta-analysis of single group attitude scores
Tommy van Steen · Jan 16, 2018 · r-sig-meta-analysis

Dear Michael and Wolfgang, Thank you both very much for your helpful comments. I have been testing the two methods suggested by Wolfgang on some fictional data to see where the differences lie, and I don?t fully understand the...

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