Here's a fantastic post on the Sports Law blog containing a table that lists a very extensive list of arrests of NBA players, the charge, the player's age at the time, and, crucially, how many years of college the player had before joining the NBA.

The point? To investigate whether the claim that not going to college makes players more prone to getting into trouble when they are teenagers in the league.

The result? There are a whole lot of thirty-somethings on the list, and a whole lot of four-years-of-college types, with very few zero-years-of-college players. Granted, there's an effect here of there really not being that many no-years-of-college players in the league as a whole, but it's a striking counterpoint to a piece of conventional wisdom.