[1] Cent Adelaide Palliat Care Serv, Adelaide, SA, Australia
[2] Univ Adelaide, Fac Hlth & Med Sci, Adelaide, SA, Australia
[3] SA Dept Hlth & Ageing, Epidemiol, Adelaide, SA, Australia
[4] SA Dept Hlth & Ageing, Hlth Stat Unit, Adelaide, SA, Australia
[5] SA Dept Hlth & Ageing, Hlth Stat Unit, Adelaide, SA, Australia