K.S.A. 60-458: Expert opinion or inference; facts or data relied upon, admissibility.

The facts or data in the particular case upon which an expert bases an opinion or inference may be those perceived by or made known to the expert. If of a type reasonably relied upon by experts in the particular field in forming opinions or inferences upon the subject, the facts or data need not be admissible into evidence in order for the opinion or inference to be admitted. Facts or data that are otherwise inadmissible shall not be disclosed to the jury by the proponent of the opinion or inference unless the court determines that the probative value of such facts or data in assisting the jury to evaluate the expert's opinion substantially outweighs any prejudicial effect.