Dear Statalist,

I have a panel dataset of firms going from 2008 to 2018. The dataset is made up of: firms supported by a Venture Capitalist (VC), unsupported firms. I would like to use the nearest-neighbour propensity score matching (PSM) method to match each VC-financed firm to 10 non-VC-financed firms at the time of getting VC funding based on some firms characteristics.
Unfortunately, I am not sure about how to proceed.

STATA commands "teffects" and "psmatch2" require an outcome variable, but I don't want to compare outcomes, I just want to perform the matching according to the year each VC-financed firm received support by a Venture Capitalist.
I would be extremely grateful if you could give me some advice on how to proceed.

Thanks in advance