Are you meaning that attempted homicide is not a crime or are you trying to say that it is classified as some other crime? I'm also not sure what it would mean to the statistics since it would not have been counted as a homicide since no one was killed, but would have been classified as a violent crime as assault or conspiracy to commit murder if not attempted homicide.
Sorry that I was not clear, commenting on the fly.
Attempted homicide is no longer on the books as a crime anymore in most states and is handled under various crimes such as assault with a deadly weapon (this crime could be from threatening someone with a firearm to actually shooting them), aggravated assault, battery, etc. Thus, the severity of the attack may affect the sentence for the criminal such as someone nearly dying versus minor injuries, but it would not be counted as a potential murder nor would there be anyway to distinguish that particular crime in statistics.
Thus, trauma center survivors', who previously could not be saved, are no longer counted as homicides. The violence level is the same but medical treatment has decreased the death rate and thus the number of murders.
https://www.umass.edu/newsoffice/ar...uppressed-improved-emergency-medical-response
https://cumberlink.com/news/local/c...cle_cce34ad3-334b-51d3-a58f-be8a15c98513.html
https://www.citylab.com/equity/2018/02/the-bleeding-of-chicago/554141/
As most cases are settled by plea bargaining in major cities, I suspect that the real violent crime rates in most major jurisdictions did not drop as much as the UCR seems to indicate. It is clear from some subsequent newsworthy cases that often the police or prosecutors have downgraded violent crimes to misdemeanors, some of which are incidental to the most severe offense. Roughly 1/2 of all violent crimes, including severe ones are not reported to the police (via the National Criminal Victimization Survey series) which has remained roughly constant since 1995 or so.
I think that these issues also indicate why urban Democrats are more adamant about extending gun control as constituents in urban areas, especially in crime ridden areas, are seeing a lot of people being shot (but surviving that). Key money quote from the citylab article on Chicago, "The narrative they tell is a slightly different one: As murders trended down overall (after 1990's), the number of shootings has been holding relatively steady—and even scaling up."
The Chicago article indicates that the murder rate spikes when trauma centers were shut down. That finding is suggested in other research since the first article linking trauma care to murder rates was originally was published. Not sure if John Lott has addressed this in his research either.