[1] Univ Hosp Toulouse, Dept Med Informat, Toulouse, France
[2] Univ Med Toulouse, Natl Inst Hlth & Med Res, INSERM, Unit 1027, Toulouse, France
[3] Univ Hosp Toulouse, Gerontopole, Toulouse, France
[4] Vrije Univ Amsterdam Med Ctr, EMGO Inst Hlth & Care Res, Dept Epidemiol & Biostat, Amsterdam, Netherlands
[5] Univ Toulouse III Paul Sabatier, Toulouse, France
[6] French Social Hlth Insurance, Reg Direct Med Control, Toulouse, France