The other interesting piece of data is by using ERAS statistics
Looking at categorical surgery (genera surgery), ERAs combines DO and USMD and reported 2474 applicants. NRMP reports 1351 US seniors. This must mean there was 1123 DO applicants who had at one point included ACGME general surgery in their ERAS applicantion to ACGME.
Out of those candidates, it looks like 83 of them ended up securing an ACGME gen surg spot.
In comparison, there was 1783 international applicants applying to general surgery this year. 70 US IMG and 70 FMG have matched, for a total of 140 out of 1783 applicants.
The chilling conclusion is that FMG and IMG actually do better than DOs in ACGME general surgery match (140/1783, 8% versus 83/1123 or 7.4%).
If you account the AOA gen surg program, however, things look better as there are another 118 filled AOA surgery spots solely by DOs.
Ultimately 118 + 83 or 201 DOs secured a general surgery spot of some sort. Out of 1123 DO applicants, we got a 18% match rate into either ACGME or AOA surgery for all DO applicsnts who have applied to ACGME gen surg. I am not sure how to calculate how many overall DO applicants to surgery there is as some of them may have only applied AOA and vice versa. What we do know is that at least 1123 DO applicants clicked one general surgery program on ACGME and ultimately 201 DOs ended up with either AOA or ACGME categorical surgery spot, slightly less than 1 in 5.
Out of 1351 US senior applicants, 1005 US applicants matched, for a match rate of 76%
Looking at this the other way, 1314 people matched to acgme gen surg, out of which 1005 were US grads. It means DOs, US/DO seniors and IMG/FMG split the remainder of 309 spots.
Source: aacme eras data, AOA match statistics, nrmp data.
@AnatomyGrey12: this number seems low, so let me know if and where my math gone wrong.