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To add a new note/question click on the pink '+' button in the bottom right corner of the screen.

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Red blood cells per microlitre can be continuous depending how measured. Do you actually count number in that precise volume or perhaps measure total in a larger volume and divide by number of microlitres counted...then you will get decimals

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From Hayley: meta-analysis of correlations

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From Hayley: meta-analysis of correlations

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Someone asked me about meta-analysis of correlations. The most common approach is to transform correlations to the "Fisher's Z" scale and then meta-analyse these.

For more details, see:
https://www.meta-analysis.com/downloads/Meta-analysis%20Effect%20sizes%20based%20on%20correlations.pdf

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I was excluding studies that report no yield of cases i.e. 0%. Do you think this introduces bias in a case of disease prevalence being the outcome of interest

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Have we moved away from publication bias with the dearth of publication journals?

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A typical, sound, Cochrane protocol:
http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD012270/full

A detailed protocol including non-randomized studies:
https://systematicreviewsjournal.biomedcentral.com/articles/10.1186/2046-4053-3-99

A protocol for a network meta-analysis:
https://systematicreviewsjournal.biomedcentral.com/articles/10.1186/s13643-016-0189-5

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Are there examples of how to conduct a meta analysis of proportions or percentages? W

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Are there examples of how to conduct a meta analysis of proportions or percentages? W

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I have Stata 14 on my laptop.  I have installed the metan command but when I use it, I get the following error message " too few variables specified".  I have tried updating stata, but I get this message when I try updtating stata : downloading documentation files ...   unexpected end of filer(612);"

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I have Stata 14 on my laptop.  I have installed the metan command but when I use it, I get the following error message " too few variables specified".  I have tried updating stata, but I get this message when I try updtating stata : downloading documentation files ...   unexpected end of filer(612);"

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Could you please advise how I can sort this problem out.
Thanks

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Would I be correct to say that it is not possible/difficult to label the x axis to control the scale of axis using the xlab command when one obtains odds ratios?

I am also wondering why the xlabel commands only uses positive values.

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How do we meta analyse hierarchical data (e.g like experiencing sampling, where samples nested in individuals)

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Can you recommend a good online tool to help manage the process?  I've heard of a few - CREBP SRA, Covidence, Rayyan, etc. Can you advise on the best one to use?

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Can you recommend some intro reading for iPd meta analyses

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How much do your voting thingies cost?