I've been looking at the NRMP Match Statistics for the year 2010 which is available on the net here
http://www.nrmp.org/data/resultsanddata2010.pdf
If you go to table 1 in that document you won't see the percent of IMGs filling positions. Therefore, what I did is the following, I extrapolated the percentage of matched IMGs using the following formula:
(Total number of applicants - Total number of US Senior applicants) divided by (Total number of matched applicants - Total number of matched US Seniors) X 100%
I've done that for each specialty and then sorted out the results from the most IMG-friendly (highest IMG matching percentage) to the least.
Here's the list:
Pediatrics-Emergency Medicine------66.67%
Emergency Medicine----------------50.07%
Pediatrics--------------------------37.84%
Obstetrics-Gynecology-------------35.98%
Internal Medicine (Categorical)------35.00%
Otolaryngology---------------------33.33%
Surgery-Preliminary (PGY-1 Only)-----32.27%
Family Medicine---------------------31.82%
Pathology---------------------------31.78%
Psychiatry (Categorical)------------30.52%
Anesthesiology-----------------------28.94%
Neurology-----------------------------28.75%
Orthopedic Surgery--------------------28.21%
Dermatology--------------------------26.09%
Plastic Surgery (Integrated)-----------25.00%
Physical Medicine & Rehabilitation------21.47%
Medicine-Pediatrics-------------------20.59%
Emergency Medicine/Family Medicine---18.75%
Surgery (Categorical)-----------------18.39%
Transitional (PGY-1 Only)--------------16.69%
Medicine-Psychiatry-------------------16.67%
Radiology-Diagnostic------------------16.38%
Medicine-Preliminary (PGY-1 Only)------15.85%
Psychiatry-Neurology------------------15.38%
Neurological Surgery-------------------15.31%
Preventive Medicine-------------------12.50%
Peds/Psych/Child Psychiatry-----------10.00%
Psychiatry-Family Medicine-------------9.09%
Medicine-Family Medicine---------------8.33%
Thoracic Surgery----------------------8.00%
Radiation Oncology--------------------7.69%
Medicine-Emergency Medicine----------7.50%
Medicine-Primary-----------------------6.21%
Vascular Surgery-----------------------6.06%
Pediatrics-Primary Care-----------------5.97%
Medicine-Preventive Medicine-----------4.11%
Medicine-Dermatology------------------0.00%
Medicine-Medical Genetics--------------0.00%
Medicine-Neurology---------------------0.00%
Pediatrics-Medical Genetics-------------0.00%
Urology--------------------------------0.00%
Total----------------------------------28.66%
Example explanation: In categorical Internal Medicine there were 3194 US senior applicants and 9552 total applicants of which 2722 US Seniors matched and 4947 total matched. Applying these numbers in the formula means;
(9552-3194) / (4947-2722) X 100% == 35% of IMGs who applied to IM were able to match.
Will be doing the same for the 2011 results this March or April.
IMPORTANT NOTES:
1) The calculation I used (Total - US seniors) does not necessarily yield IMGs only. Because there other categories that are not US seniors, such as US Osteopathic applicants, US graduates, and 5th pathway applicants. Also, many experts consider Caribbean graduates and US citizen who are IMGs at significant advantage over Non-US citizen graduates. However, the percentages listed above should largely represent non-US IMGs as they make up the majority of that section.
2) There are other issues that we should consider. The NRMP Match data does not include the prematch and postmatch (scramble) data. Therefore, in reality, these numbers might be little bit higher than what's listed here because many IMGs make it into residency via out-side-the-match offers.
3) The NRMP data list applicants whenever they rank that specialty. But the fact that many many applicants do apply to other specialties therefore, making the percentages mentioned here fairly inaccurate. However, I still believe the sequence from the most difficult to the least difficult specialty for IMG should be reasonably accurate regardless of the potential error in each individual percentage.
4) I think the reason why we see Otolaryngology and Orthopedics at comparatively less competitive levels is that IMGs have learnd the lesson and they realize their potential so those with low scores and non-surgical experience stopped applying to surgical specialties and therefore only those with very high scores and surgical experience have applied and this is what made the ranking of these specialties higher in the list.
5) The sample size in some of the rare specialties (such as Peds ER and genetics) is very low making the statistical significance of these numbers very low.