Hofstra MS3 here. Keep in mind when you look at schools that half-OOS does not mean they weight IS and OOS the same; otherwise, the number of IS students should be closer to the percentage of the US population that that state represents (far less than 50%).
THAT BEING SAID, there are 2 important exceptions for our school:
1. We have a very small sample size, 140 students total between MS1/2/3, and I don't even know if the MSAR data includes the MS1s, who literally just started on Monday.
2. These stats are influenced by the fact that HNSLIJ is a new medical school, and few people who didn't pay close attention to the presidential debates have heard of Hofstra. NSLIJ is a giant in the healthcare world but not a nationally-known institution outside of that realm, although it is quickly moving there. I am impressed to see that 2/3 of the applicants were OOS, but once again the population of New York is <33% of the US population.
My own 2 cents... our school cares most about whether or not you are a "good fit" and the interview is a big deal to them. Applicants who say things like "I have a strong desire to attend HNSLIJ because I want to have a positive impact on patients in my own backyard" probably get an additional "in-state" bonus; they really like that. But that is not so much in-state as it is in-NYC/Nassau/Suffolk... most of our MS3 New Yorkers are from long island, the city, or Westchester... I can't even name one off the top of my head who is from anywhere north of Westchester (in NY). BTW, I am included in the native long-islanders.