Additive Effects of Cognitive Function and Depressive Symptoms on Mortality in Older Community Living Adults. The Journals of Gerontology: Medical Sciences. 2003;58A(5):M461-467..
Black-White Disparities in Functional Decline in Older Persons: The role of cognitive function. The Journals of Gerontology, Series A: Biological Sciences and Medical Sciences. 2005;60(6):933-939..
Self-restriction of Medications Due to Cost in Seniors without Prescription Coverage. Journal of General Internal Medicine. 2001;16(12):793-9..