Marginally significant (p = .07) https://www.wvbauer.com/ 2026-04-21T10:34:37+00:00 https://www.wvbauer.com/ https://www.wvbauer.com/lib/exe/fetch.php/wiki:logo.png text/html 2025-11-24T11:48:47+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/course_advma?rev=1763984927 Advanced Meta-Analysis Course General Information Course Dates to be announced Course Times to be announced Course Location online Course Fee 400 Euros Note: If you would like to be notified once arrangements for a new round of the course have been made, please send a mail to wvb (at) wvbauer (dot) com to indicate your interest and I would be happy to send you a mail once there is an update (this way, you do not have to keep checking this website). text/html 2023-08-30T08:30:53+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/course_esm?rev=1693384253 text/html 2026-01-16T10:06:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/course_esmda?rev=1768558017 ESM Data Analysis Course General Information Course Dates to be announced Course Times to be announced Course Location online Registration Deadline to be announced Course Fee 400 Euros Note: If you would like to be notified once arrangements for a new round of the course have been made, please send a mail to wvb (at) wvbauer (dot) com to indicate your interest and I would be happy to send you a mail once there is an update (this way, you do not have to keep checking this website). text/html 2026-01-16T10:06:42+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/course_ma?rev=1768558002 Meta-Analysis Course General Information Course Dates to be announced Course Times to be announced Course Location online Registration Deadline to be announced Course Fee 400 Euros Note: If you would like to be notified once arrangements for a new round of the course have been made, please send a mail to wvb (at) wvbauer (dot) com to indicate your interest and I would be happy to send you a mail once there is an update (this way, you do not have to keep checking this website). text/html 2025-12-04T13:28:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/course_oor?rev=1764854881 Open Online Introduction to R Course General Information Course Dates to be announced Course Times to be announced Course Location online / live stream Registration not necessary Course Fee none (this course is free!) Course Description R is a programming language and software environment for carrying out computations, manipulating and analyzing data, and creating various types of plots and graphics (see the text/html 2025-08-12T11:25:56+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/course_r?rev=1754997956 Introduction to R Course General Information Course Dates to be announced Course Times to be announced Course Location Maastricht, The Netherlands (details below) Registration Deadline to be announced Course Fee see below Note: This course is no longer taught in its current form. For those affiliated with Maastricht University, please go text/html 2020-02-04T17:49:20+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/courses_at_dept?rev=1580838560 Courses at the Department The course will be held at the Department of Psychiatry and Neuropsychology at Maastricht University in the Netherlands. Department Location Vijverdalseweg 1 6226 NB Maastricht The Netherlands Google Maps Link Arriving by Car If you arrive by car, just use the text/html 2023-10-31T10:55:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/courses_at_valk?rev=1698749755 Courses at van der Valk The course will be held at Hotel van der Valk, Maastricht, the Netherlands. Hotel Location Nijverheidsweg 35 6227 AL Maastricht The Netherlands Google Maps Link Arriving by Car If you arrive by car, just use the Google Maps Link to obtain directions depending on your starting point. There is free parking at the hotel. text/html 2026-04-09T12:51:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/cv?rev=1775739064 Curriculum Vitae Wolfgang Viechtbauer Associate Professor of Methodology and Statistics Department of Psychiatry and Neuropsychology Mental Health and Neuroscience Research Institute Faculty of Health, Medicine, and Life Sciences Maastricht University, P.O. Box 616 (VIJV1) 6200 MD Maastricht, The Netherlands Tel: +31 (43) 388-4170 Email: wvb (at) wvbauer (dot) com text/html 2025-08-11T11:15:54+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/directions?rev=1754910954 Office Location and Directions My office is located in the Department of Psychiatry and Neuropsychology at Maastricht University. Department Address Room 2.041 (second floor) Vijverdalseweg 1 (SN building) 6226 NB Maastricht The Netherlands Google Maps Link Arriving by Car text/html 2020-02-04T17:49:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/feedback?rev=1580838564 Feedback on Articles Keywords When providing feedback on papers/manuscripts that I am given to read, I occasionally use a set of keywords to simplify and accelerate the feedback process. Below you can find that list of keywords, together with an explanation of their meaning. text/html 2026-03-04T12:56:46+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/home?rev=1772629006 Welcome ... ... to my website. Below you can find my contact information and office address (with directions). In case you are wondering who the heck I am, you could consider reading my (not so really) short profile. On this site, you can also find my curriculum vitae, a list of my publications and presentations, links to some text/html 2026-01-09T10:08:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/live_streams?rev=1767953314 Live Streams on Twitch I run the occasional live stream via the streaming platform Twitch where I talk about R, statistics, and whatever else comes up (yes, I am that much of a nerd). Below, you can find the schedule for the upcoming streams, how to join/participate, what topics have been covered in the past (including all the materials), some additional notes and frequently asked questions (FAQs) about these streams, and a list of some future topics I might cover. text/html 2026-04-16T17:23:23+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/officehours?rev=1776360203 Office Hours for Statistical and Methodological Consulting As a statistician within the Department of Psychiatry and Neuropsychology at Maastricht University, one of my tasks includes the provision of statistical and methodological support for members of the department. To facilitate this process, I hold open office hours for such consulting on a semi-regular basis. You do not need to make an appointment to meet with me during these office hours (and in fact you can't text/html 2026-03-04T12:57:02+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/oldnews?rev=1772629022 Older News 2025-04-30: We recently published a paper at Behavioral Research Methods describing the findings from a comprehensive simulation study on the performance of various tests and methods for constructing confidence intervals for the scale coefficients in meta-analytic location-scale models. See text/html 2025-08-12T11:28:06+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/prep_for_r?rev=1754998086 Preparing to Use R In case you are taking one of my courses where I make use of the statistical software package R, and you have no prior experience with R, it would be useful to familiarize yourself with R a bit ahead of time (of course, this doesn't apply to the text/html 2026-04-17T10:09:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/presentations?rev=1776420567 Presentations * Viechtbauer, W. (2026). Mixed-effects location-scale models in meta-analysis. International Conference on Multilevel Analysis, Utrecht, The Netherlands. [slides] * Viechtbauer, W. (2025). A brief history of meta-analysis. GMDS Academy, Barsinghausen, Germany. [slides] * Viechtbauer, W. (2025). text/html 2024-04-30T07:35:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/profile?rev=1714462524 My (Not So Really) Short Profile Most people probably don't read more than the first paragraph anyway, so I'll give you the short (and dry) version first. The not so really short details follow after that. I am associate professor of methodology and statistics in the Department of Psychiatry and Neuropsychology ( text/html 2026-04-07T10:05:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/publications?rev=1775556304 Note: You can find PDFs of many of the articles below on the Maastricht University Research Publications repository. If you cannot find an article there, feel free to email me in case you don't have access and I would be happy to send you a copy. Publications Journal Articles * Igelmann, J.-B., Pauly, M., & text/html 2024-10-26T09:06:51+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/rpkgsiuse?rev=1729933611 List of R Packages I Use In my work, I make extensive use of the statistical software package/environment R. One of the great strengths of R is the large number of add-on packages that extend the functionality of R (i.e., the functionality of the base/standard packages that are installed by default) in various ways. Here, I keep track and list packages that I make use of on a (semi)regular basis. My work would be many magnitudes more difficult if these packages (and R itself!) did not exist. text/html 2025-05-29T06:34:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/sidebar?rev=1748500464 Navigation * Homepage * Short Profile * Publications * Presentations * Teaching * Software * Curriculum Vitae * R Packages I Use * Tools I Use * Office Hours * Live Streams Courses * Meta-Analysis Course * Advanced MA Course * Introduction to R Course * Open Online R Course * ESM Data Analysis Course Other Sites / Profiles * Mastodon * Bluesky * GitHub * Stack Exchange * Google Scholar * Web of Science * UM Profile * PubMed * ORCID * RUG@U… text/html 2025-08-23T08:53:24+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/software?rev=1755939204 Software * metafor: A Meta-Analysis Package for R * Description: The metafor package is a comprehensive collection of functions for conducting meta-analyses in R. The package includes functions to calculate various effect sizes or outcome measures, fit fixed-, random-, and mixed-effects models to such data, carry out moderator and meta-regression analyses, and create various types of meta-analytical plots (e.g., forest, funnel, radial, L'Abbé, Baujat, bubble, and GOSH plots). For meta-anal… text/html 2026-02-05T10:22:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/teaching?rev=1770286955 Teaching * Meta-Analysis Course * Contents: Graduate level course on methods for meta-analysis. Topics covered include: steps of a systematic review, extracting/calculating effect sizes and outcome measures for meta-analyses, equal/fixed/random/mixed-effects models, moderator analyses (meta-regression and subgrouping), model diagnostics (identifying outliers and influential studies) and sensitivity analyses, publication bias, multilevel/multivariate/network meta-analysis models (for handli… text/html 2025-06-29T17:00:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/tools?rev=1751216428 Tools I Use I like to read about the tools (i.e., hardware and software) other people use for their work, so I can spend more time optimizing my own workflow (instead of actually getting work done ...). To help you procrastinate as well, I have decided to jot down some notes on the tools I use myself. text/html 2025-01-31T08:47:01+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/workshop_2022_ma_esmarconf?rev=1738313221 Meta-Analysis Workshop for ESMARConf2022 General Information Workshop Dates 21 February & 6 May, 2022 Workshop Times 9:00 - 18:00 CET (check local time) Workshop Location online / live stream Registration not necessary Workshop Fee none (this workshop is free!) Materials text/html 2025-01-31T08:47:21+00:00 Anonymous (anonymous@undisclosed.example.com) https://www.wvbauer.com/doku.php/workshop_2023_ma_esmarconf?rev=1738313241 Meta-Analysis Workshop for ESMARConf2023 General Information Workshop Dates 24 March, 2023 Workshop Times 17:00 - 00:00 CET (check local time) Workshop Location online / live stream Registration not necessary Workshop Fee none (this workshop is free!) Materials can be found