"Runaway" means that a child or youth is absent from the residence of a caregiver or the premises of a child care facility without the consent of the persons responsible for the child's or youth's welfare, the whereabouts of the child or youth are unknown and intent to runaway has been established. If the child or youth has left a note or other indication of intent to run away, he or she shall be considered a "runaway" immediately. (R 331)