“…A strength of this study is the population that was studied, because the prevalence of depression and cognitive impairment increases with age (Skoog et al, 1993;Wetterling and Junghanns, 2004). With a prevalence of 17% for depressive symptoms (Bergdahl et al, 2005) and 30% for cognitive impairment (Skoog et al, 1993) in the oldest old (85 years and older), these conditions are among the most important mental health problems in this age group.…”