Meta-Analysis Resources

Tools for Those Who Summarize the Evidence Base

Resources and networking for those who conduct or interpret meta-analyses related to any phenomenon that is gauged in multiple studies.

Blair T. Johnson
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Best starting points for systematic reviews and meta-analysis

A colleague asked for advice about writing a systematic review, for a team that had never written one before. Below is a refined version of my advice.First, note that these days there is a systematic…Continue

Tags: small-studies, bias, effects, reporting, standards

Started Jun 8, 2017

Know Your Limitations: "Data" and "Big Data" vs. "Statistics" and "Models" and the Necessity of Good Theory

If you are reading this blog, you like numbers. Perhaps you even love them. Even if you are a dedicated qualitative researcher, I’d urge you to continue reading; this blog might be even more valuable…Continue

Tags: science, data science, theory, statistics, conceptual

Started Sep 6, 2014

Role of methodological quality in meta-analysis
1 Reply

For a few years now, I have been doing some work related to the methodological quality (MQ) of meta-analyses and of the studies they integrate, which have both shown an increasing presence in…Continue

Tags: methodological quality, simple slopes, interactive approach, meta-regression, OQAQ

Started this discussion. Last reply by Blair T. Johnson Jun 8, 2017.

Post No Bills (here unless it is about meta-analysis generally; but do so in specific items to groups)

The forum is a little like a blank wall that is irresistible: It just seems to attract comments. So, let me start with a little humor:…Continue

Tags: groups,

Started Jan 5, 2014

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Software for Meta-Analysis

Discussions and resources focused on software to assist in conducting meta-analyses.
Jul 27

Blair T. Johnson's Blog

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As I write, the first day of 2014 is fading and the new year will quickly become just a fact along the way. The reprieve from emails and demands that the holidays permit will be a distant memory. And big data will grow bigger and bigger still and require more and more help from cool research synthesis procedures and meta-analytic statistics. That's why we are here. I am teaching a graduate seminar this spring on the subject, at the University of Connecticut, and I've asked…


Posted on January 1, 2014 at 4:30pm

Meta-Analysis: The Original 'Big Data'

I'm winding down after a productive sabbatical leave and of course summer's waning days. I should be working on that new course preparation (yikes, I'm teaching in a week!), but I wanted to say something about trends in recent months (and years) connected to Big Data in the media and science.

It strikes me that the original instantiation of big data is meta-analysis. Isn't it the goal of meta-analysis to pool all the relevant data into one…


Posted on August 19, 2013 at 8:00am

Mastering Meta-Analysis

Most of what scholars do hinges on having sufficient skill to create meaningful assessments of knowledge and the evidence base that underlies it. Meta-analysis is a skill set you can develop if you work at it with enough deliberative practice. How much deliberate practice does it take?…


Posted on December 30, 2012 at 4:00pm

Our Communal Collective

It's sunny as I write you from my home office in mid-September, where I work at home during my sabbatical leave. As you probably know, sabbaticals are a periodic break from the regular hum-drum of academic life in order to focus more concertedly on other goals, mainly scholarly.

Popular belief has it that "sabbatical" is just another word for "vacation," but it is not true, well at least not for me: It is true that I am teaching no courses until next fall (and trying hard not to think…


Posted on September 20, 2012 at 3:30pm

Comment Wall (9 comments)

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At 5:54am on February 19, 2018, Sophie Reyer said…

Good Day,

How is everything with you, I picked interest on you after going through your short profile and deemed it necessary to write you immediately. I have something very vital to disclose to you, but I found it difficult to express myself here, since it's a public site.Could you please get back to me on:( for the full details.

Have a nice day

My best regards.


At 4:53pm on April 28, 2012, Cynthia Symons said…

I guess it has been a long time! I'm up to my usual tricks--you know me. To tell you would take more time and space than I have here. We should keep in touch a little better. How are you?

At 3:47pm on July 16, 2011, Bill Gottdiener said…

Thanks, Blair! I'm delighted that you've set up this community. I hope you don't mind, but I want to connect some of my other colleagues/students.


Take care,



At 4:24am on July 16, 2011, Rasmi Kokash said…

Merci Blair, c'est tres gentil.

Bon WE.


At 4:08pm on February 3, 2011, Natalie Dove said…

Is there a place to download either version of dstat? Looks like I'm back at my meta-analytic ways.


Great site! Nat

At 9:52am on November 30, 2010, Michelle Warren said…
: )
At 12:08pm on November 15, 2010, Seth M. Noar said…
Hi Blair-

Great site! I just learned about it this morning. All is well here.... just at that point in the semester when I'm swamped!

Seth :)
At 11:17am on May 17, 2010, Wolfgang Viechtbauer said…
Hi Blair,

I haven't had that much time to poke around, but this site looks like it could be a really useful resource for anybody who is conducting or about to start conducting meta-analyses. I'll do my best to add some information about meta-analysis software (and the metafor package) when I have some time.

At 11:25am on March 21, 2010, Tania said…
Yeah! But it is a reality that meta-analysis has advanced a lot so that can be help us a lot to organize that growth and to make more efficient progress.

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