[1] St Josephs Hlth Care London, Specialized Geriatr Serv, London, ON, Canada
[2] Western Univ, Schulich Sch Med & Dent, Dept Psychiat, London, England
[3] Western Univ, Schulich Sch Med & Dent, Div Geriatr Med, London, England
[4] Therapeut Recreat Ontario, Oshawa, ON, Canada
[5] St Josephs Hlth Care, Specialized Geriatr Serv, Res & Evaluat, London, ON, Canada
[6] Western Univ, Schulich Sch Med & Dent, Dept Epidemiol & Biostat, London, ON, Canada