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When I installed and ran MAVIS I got an error message:

library(shiny)
library(MAVIS)
startmavis()

Listening on http://127.0.0.1:7319
Warning: Error in library: there is no package called ‘meta’
Stack trace (innermost first):
42: library
2: shiny::runApp
1: startmavis
Error : there is no package called ‘meta’

It is probably some issue with the dependencies of packages because when I manually installed meta package it worked fine again.

The following data does not generate a Fixed-Effect model forest plot despite it assumes homogeneity.
Study N1 N2 d
Day (2013) 148 148 0.13
Findik (2012) 60 57 0.2
Wassenberg (2010) 42 84 0.01
Lupion (2015) 72 72 0.35
It uses Effect Size d.
Thank's for the software!

Using the default correlations data from Widman, L., Noar, S. M., Choukas-Bradley, S., & Francis, D. B. (2014). Adolescent Sexual Health Communication and Condom Use : A Meta-Analysis. Health Psychology. results in a RE model estimate of r=0.2650 regardless of whether ZCOR or COR are selected.

The code to implement the FE and RE meta-analysis is FE.res <- meta::metacor(dat$r, dat$N) this does not take an argument related to the model estimator ("DL", "REML" etc) or an argument related to the measure ("ZCOR" or "COR").

meta::metacor(dat_cor$yi, dat_cor$N, method.tau = "DL", sm = "COR") would be required to calculate the estimate using raw correlations.

Hello,

I'm using MAVIS to complete a meta-analysis (correlation based) and the moderator analysis isn't working (neither for the example data listed on the website nor my own data). A figure is generated but no statistics. Is this user error my end (and apologies if so) or a bug within the website?

Warm wishes,
Rosa

Dr. Soliman Said emailed me about a bug where if the first letter for the study label is not capitalized MAVIS will throw an error. For example "Study" will work but "study" will not.

These correlations are reported to relate to Widman, L., Noar, S. M., Choukas-Bradley, S., & Francis, D. B. (2014). Adolescent Sexual Health Communication and Condom Use : A Meta-Analysis. Health Psychology however there are errors in the reported correlation coefficients for study 24 (Guzmán-2003) and study 27 (Hart-2005).

These studies are entered as 0.334 and 0.07 respectively however both should be negative: -0.334 and -0.07.

I was wondering if it would be possible to make the analysis scripts used accessible to the user? In my reviews, I strongly encourage authors to give the analysis scripts for their meta-analyses, and it would be great if I can do that alongside recommending MAVIS.

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