If a vehicle is involved in a single vehicle accident, with property damage, what are the requirements for a Uniform Traffic Report to show?

If a driver of a vehicle involved in the aforemention incident, refuses medical treatment (there was injury) from first responders, but is later (same day / night) transported by a private citizen to a hospital for treatment, how does that effect a possible DUI Investigation?

If seven (7) Local Law Enforcement Officers are present, along with multiple EMS / Fire First Responders, how many statements should an investigating trooper have obtained with regards to the crash (one hour plus, from time of first contact with driver, to FHP arrival on scene)?

If a private citizen did transport the driver, post refusal of EMS, is this something that would be documented in an FHP report and would it be subject to Public Record?

Thanks.