(1) a confession alone is sufficient to warrant the conviction of a defendant without some other proof that the crime has been committed if:

(a) the state files notice in accordance with (3)

(b) the defendant is charged with a crime listed in ORS 163A.005 (Definitions for ORS 163A.005 to 163A.235)

(c) the victim is a vulnerable person

(d) the victim is incompetent to testify under (Rule 601. General rule of competency)

(e) the confession is made to a peace officer or a federal officer, as those terms are defined in ORS 133.005 (Definitions for ORS 133.005 to 133.400 and 133.410 to 133.450), or to an individual conducting an investigation under ORS 430.745 (Investigation of abuse), while the officer or individual is acting in the course of official duty AND

(f) The court finds that there is sufficient evidence to establish the trustworthiness of the confession

(2) in making the determination described in (1)(f), the court will consider the following factors, in addition to other factors it considers important:

(a) whether there is evidence demonstrating the truthfulness of portions of the confession

(b) whether the defendant had the opportunity to commit the crime

(c) tThe method of interrogation used to solicit the confession AND

(d) whether the defendant is a vulnerable person