"Screening for Cognitive Impairment in Older Adults: A Systematic Review for the U.S. Preventive Services Task Force"
Annals Oct 2013
http://annals.org/article.aspx?articleid=1760977
"Conclusion: Brief instruments to screen for cognitive impairment can adequately detect dementia, but there is no empirical evidence that screening improves decision making. Whether interventions for patients or their caregivers have a clinically significant effect in persons with earlier detected cognitive impairment is still unclear."