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Hi C?tia, Here are links to some previous listservs discussions on this topic: https://stat.ethz.ch/pipermail/r-sig-meta-analysis/2017-September/000223.html https://stat.ethz.ch/pipermail/r-sig-meta-analysis/2017-August/000130.html

On Tue, Aug 13, 2024 at 4:45?AM Viechtbauer, Wolfgang (NP) < wolfgang.viechtbauer at maastrichtuniversity.nl> wrote: > @James: The deprecation message (Please use `metaffor::vcalc()` instead.) > has a typo (should be metafor::vcalc()). > Shoot. Thanks for pointing this out...

On Sun, Oct 3, 2021 at 1:18 PM Farzad Keyhan <f.keyhaniha at gmail.com> wrote: > I see, I'm still exploring to see what has caused the two models in my > previous email to give slightly different fits...

> > Thanks for your clarification. Your explanations are very clear. > Actually, the SD of BLUPs and tau will converge when the within-study > replicates are getting large. > Can you say more about this? Is this claim based on simulations or something...

The easiest thing to do is probably to simply recalculate the model after omitting the intercept term: robu(formula = es ~ 0 + Time, data = SMD,studynum = study, var.eff.size = var,rho = .8, small = TRUE, modelweights = "CORR") Sent from my iPhone...

I wonder about exactly this question for most of the second-order meta-analyses that I have seen. Beyond issues of statistical dependence, SOMA tend to further conceal heterogeneity of effects. Averaging together averages makes it that much harder to...

<Nerdy follow-up question> One can of course construct a dataset where the likelihood profile peaks > essentially at -min(vi) (or rather, just a smidge above it), which might > suggest that a value of tau^2 that is even smaller...

Hi Yuhang, But is it appropriate to assume that true effects' dispersion at time 0 and > time 1 is exactly the same (equality of variances across time points)? > The model you've fit assumes that the variances are equal across...

Use regtest() with model = "lm" and predictor = "ninv." Note that you'll need to provide the total sample sizes too. On Fri, Jul 14, 2017 at 9:26 AM, Phil Jones <philpauljones at gmail.com> wrote: > I would like to...

Hello, I'm writing unit tests using testthat for a package that we want to submit to CRAN. Because of some aspect of how testthat works (which is beyond my ken), I have only been able to get my tests...

Responses below. On Mon, Oct 25, 2021 at 4:21 PM Luke Martinez <martinezlukerm at gmail.com> wrote: > > Sure, thanks. Along the same lines, if I see that the unconditional > distribution of the SMD estimates is multi-modal or right...

Hi meta-analysis folks, I have a kind of vague question about something I've run across a few times. There are some (perhaps rare) situations where investigators are interested in the absolute magnitude of an effect but where the...

This question pertains to a common issue in systematic reviews (although not meta-analysis per-se). I have a group of 5 raters who screened abstracts for possible inclusion in a systematic review. Each abstract was scored (dichotomously, as "not...

All, A common problem in multivariate meta-analysis is that the information needed to calculate the correlation between effect size estimates is not reported in available sources, even when the variances of the estimates can be calculated. One approach to...

Yes, that's a good point. Thanks for the reminder. On Thu, Jan 27, 2022 at 10:52 AM Dirk Eddelbuettel <edd at debian.org> wrote: > > On 27 January 2022 at 11:18, Ben Bolker wrote: > | I have spent hours...

Greetings, I'm writing to see if anyone has suggestions for how to handle an issue I'm facing with the clubSandwich package ( https://CRAN.R-project.org/package=clubSandwich; Github repo: https://github.com/jepusto/clubSandwich). The package documentation...

Hi Patrizio, Your question is not specific enough for someone to provide a response. Perhaps if you can provide more context and detail, someone might be able to offer pointers. Is this in the context of a meta-analysis? predictive...

Hi Paco, Responses below. James On Mon, Jan 23, 2023 at 4:25 PM Tomas-Valiente Jorda Francisco < tomasf at student.ethz.ch> wrote: > One clarification question on the RVE approach you suggest. Your proposal > is that (as per the...