What is the legal test for weighing evidence in a personal injury case?

substantially outweighed by the possibility of undue consumption of time, danger of undue prejudice, confusion of issues, or misleading the jury. (Id. at p. 917.) The weighing process is "entrusted to the sound discretion of the trial judge who is in the best position to evaluate the evidence." (People v. Fitch (1997) 55 Cal.App.4th 172, 183.)