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Factors influencing cost-related nonadherence to medication in older adults: A conceptually based approach. Value in Health. 2010;13(4):338-345..
Association between Cognitive Function and Social Support with Glycemic Control in Adults with Diabetes Mellitus. Journal of the American Geriatrics Society. 2009;57(10):1816-24..
Direct Social Support and Long-term Health Among Middle-Aged and Older Adults With Type 2 Diabetes Mellitus. Journals of Gerontology Series B-Psychological Sciences and Social Sciences. 2013;68(6):933-943. doi:10.1093/geronb/gbt100..
Beyond Comorbidity Counts: How do comorbidity type and severity influence diabetes patients' treatment priorities and self-management. Journal of General Internal Medicine. 2007;22(12):1635-40.
Does Physician Communication Influence Older Patients' Diabetes Self-Management and Glycemic Control? Results From the Health and Retirement Study (HRS). The Journals of Gerontology, Series A: Biological Sciences and Medical Sciences. 2007;62A(12):1435-42..
Adults with cardiovascular disease who help others: a prospective study of health outcomes. Journal of Behavioral Medicine. 2013;36(2):199-211. doi:http://dx.doi.org/10.1007/s10865-012-9414-4..
Mechanisms for Racial and Ethnic Disparities in Glycemic Control in Middle-aged and Older Americans in the Health and Retirement Study. Archives of Internal Medicine. 2007;167(17):1853-1860..
Hospitalizations and deaths among adults with cardiovascular disease who underuse medications because of cost: a longitudinal analysis. Medical care. 2010;48(2):87-94.
The Health Effects of Restricting Prescription Medication Use Due to Cost. Medical Care. 2004;42(7):626-634..
Association Between Purpose in Life and Glucose Control Among Older Adults. Annals of Behavioral Medicine. 2018;52(4):309-318. doi:10.1093/abm/kax012..
Spouse and Child Availability for Newly Disabled Older Adults: Socioeconomic Differences and Potential Role of Residential Proximity. The Journals of Gerontology Series B: Psychological Sciences and Social Sciences. 2015;70(3):462-469. doi:10.1093/geronb/gbu015..
Older Adults' Residential Proximity to Their Children: Changes After Cardiovascular Events. Journals of Gerontology Series B: Psychological Sciences and Social Sciencess. 2015;70(6):995-1004. doi:10.1093/geronb/gbu076..
Are older adults living in more equal counties healthier than older adults living in more unequal counties? A propensity score matching approach. Social science and medicine (1982). 2015;141:82-90. doi:10.1016/j.socscimed.2015.07.020..