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Thanks for your answers Guido and Wolfgang. Best regards Fernando [[alternative HTML version deleted]]
Dear all, I just read a meta-analysis where effect sizes were Pearson's correlation coefficients (r). The analyzes were performed using the RevMan software and the forest plot presented by the authors shows confidence intervals values less than -1...
Hi all, I am conducting a meta-analysis about standard deviations of change between 2 conditions in the metafor package. I am using effect sizes (lnSD) and their sampling variance, based on Nakagawa et al. ( https://besjournals.onlinelibrary.wiley.com...
Hello everyone, I am carrying out a meta-analysis that involves studies of different designs, as follows: 1) parallel controlled; where ES = pre to post change of control group - pre to post change of experimental group. 2) crossover; a) ES...
Dear Tzlil, The SEM is a standard deviation of the change between trials/tests. Two previous meta-analyses analyzed this type of effect using the SAS software. (see Hopkins WG, Schabort EJ, Hawley JA. Reliability of power in physical performance...
Dear Professor Wolfgang, Thank you for your help. Best wishes Em qui, 18 de jul de 2019 ?s 09:50, Viechtbauer, Wolfgang (SP) < wolfgang.viechtbauer at maastrichtuniversity.nl> escreveu: > The covariance between two lnSD values depends on the correlation between...
Dear Professor Wolfgang, Thank you for your response. My question is if I should use any value of correlation to determine the variance-covariance matrix in this type of data? I am not sure if I could use a correlation...
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