I asked two different people what "non-participant" and "not-matched" meant and I couldn't really get a straight answer. One person explained that "non-participant" meant that these students did not participate in the regular match because they were either military or they went into the fellowship. This answer doesn't quite make sense because they listed military in its own category and gave the number of people that did military residency. I again asked what "not matched" meant and I was told that these people did not match into a residency and the subject was quickly changed.
If anyone knows what this means it would be nice to clear it up because it's a little concerning, especially with the way they handled my questions about it.