metan forestplot not showing subgroup analysis

[Marzena Jablonska]

For a study comparing gender differences in mental health outcomes across different countries, I have run a meta-analysis using the belowmentioned code

metan IRR_GHQ_gender LCI_GHQ_gender UCI_GHQ_gender , eform effect (IRR) xlab(1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 ) random label(namevar=Country) texts (90)

Now I want to rub some subgroup analyses by comparing low and middle income countries to high income countries so I am using the code below, however I do not get a forest plot split by "Income". Instead I get the forestplot below

metan IRR_GHQ_gender LCI_GHQ_gender UCI_GHQ_gender , eform effect (IRR) by ( Income) xlab(1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 ) random label(namevar=Country) texts (90)

I have tried using both an integer as a string variable to split countries, but neither does result in a split forestplot.

A preview of my data:

input str16 País float(IRR_GHQ_gender LCI_GHQ_gender UCI_GHQ_gender) byte Income

I am pretty sure I am missing something straightforward but I cannot find the source of the problem. I would appreciate any advice!

[David Fisher]

Hi Marzena,
If you still need help with this, could you please re-post with the complete listing of your data? Currently all I can see are the headings (variable labels).
Many thanks,
David.