metan with sample size

[Pallavi Ch]

Hi all,

I am working on meta-anaylsis. I have 4 studies with sample size, coefficients, p values and standard errors (also confidence intervals but only for two studies). Now I want to run meta-analysis. I used the code

'metan Effect_value SE, random'

However, it is not displaying study authors instead it shows 1, 2, 3, 4

I also want to include study sample size using the following code

'metan Effect_value SE, random n(sample_size)'

Study_ID Effect [95% Conf. Interval] % Weight
------------------------+----------------------------------------------
1 0.280 0.190 0.370 34.63
2 0.240 0.150 0.330 34.63
3 0.330 0.052 0.608 3.63
4 0.170 0.068 0.272 27.10
------------------------+----------------------------------------------
Overall,DL 0.238 0.185 0.291 100.00
---------------------------------------------------------------------
I tried with forestplot option, then I found 10% heterogeneity, which was 0 using metan

It would be great if someone could guide me where it went wrong and how to solve it

Thank you

[George Ford]

version number? n() does not appear to be allowed in more recent versions. I think wgt() is the new option.

lcols(Study_ID) will give you labels for the Study_ID. Or, you have Study_Name, you can lcols(Study_Name).

providing sample sizes might be helpful.

[Pallavi Ch]

Hi,
thank you for responding

I am using STATA SE 18.5

Sample sizes are as follows

study 1- 89
study 2- 204
study 3- 202
study 4- 2280