Dear community,

I have a data set of firms that went public via a SPAC merger (SPAC=1). Now I want to match each firm with SPAC=1 with one similar firm that went public via an IPO (SPAC=0), based on firm size (ln of book value of assets), age (years), and industry (2-digit sic).
I understand that one way to do so is setting up a propensity score matching. However, I struggle to set up the matching in STATA. I found a similar question here, but unfortunately, it does not help me in finding a solution.

Please find below a few lines of my sample for reference.
Any help is highly appreciated!

Best,
Tim
ID SPAC SIZE AGE INDUSTRY
1 1 2,04 1 28
2 1 7,91 2 73
3 1 8,76 3 14
4 1 13,03 3 87
5 1 13,83 5 73
6 1 15,67 6 13
7 1 16,42 5 59
8 1 18,21 3 78
9 1 19,24 8 73
10 1 1,56 3 99
11 0 3,47 5 28
12 0 4,49 2 36
13 0 6,01 7 28
14 0 9,12 4 73
15 0 10,69 10 28
16 0 13,08 6 17
17 0 16,93 15 28
18 0 18,37 8 28
19 0 19,88 13 73
20 0 22,02 10 73