Is there any actual data on how often the SPD sends a capias to the State Attorney for a person who hasn't been arrested?
ETA: When police send a capias to a prosecutor, is that a recommendation that a person be charged immediately? Or does it leave open the possibility that more evidence be gathered, before the person is charged and the 'speedy trial' clock starts?
I'm sure there is data. I'd narrow the search to cases that allege self defense. I think arrest has to be probed too, for cases of battery and assault (which are also amenable to self defense), but for which a person might bail out before being charged.
Typically, the system works to protect the public, and arrest is done on probable cause. The police do most of the investigation, but the state attorney can obviously do more, and almost certainly does as a function of discovery and trial preparation.
Anyway, yes, the capias leaves open a possibility for additional time for investigation before charging. There are time limits for holding without charge, too, and IIRC, those are fairly short, certainly less than a month.