What days of the week does the absconding occur? With who does it occur? With whom does it not occur? Is there ever an environment or a person that it never ever occurs with? Why?
Are there fluctuations in when it occurs? Are there lots of episodes in a row and then a break for a period of time? What changed in between then?
What level of freedom of movement is there within the house? Within the front and backyards? Is it safe for the individual to be able to move around by themselves or do they need 100% supervision? Or do they need to be prevented from going somewhere or touching certain things? Does that prevention need to be done by a person by moving things out of reach or limiting how many of things are accessible? Why? Do you go through a lot of certain things i.e. use them up and then need more instantly?