Estimating the Cost of Informal Caregiving for Elderly Patients with Cancer. Journal of Clinical Oncology. 2001;19(13):3219-25.
Extent and Cost of Informal Caregiving for Older Americans with Symptoms of Depression. American Journal of Psychiatry. 2004;161(5):857-863..
The Health Effects of Restricting Prescription Medication Use Due to Cost. Medical Care. 2004;42(7):626-634..
Informal Caregiving for Diabetes and Diabetic Complications Among Elderly Americans. The Journals of Gerontology: Social Sciences. 2002;57B(3):S177-86.
National Estimates of the Quantity and Cost of Informal Caregiving for the Elderly with Dementia. Journal of General Internal Medicine. 2001;16(11):770-8.
A National Study of the Quantity and Cost of Informal Caregiving for the Elderly With Stroke. Neurology. 2002;58(12):1754-9..
Out-of-Pocket Health Care Expenditures Among Older Americans with Dementia. Alzheimer Disease and Associated Disorders. 2004;18(2):90-98.
Out-of-Pocket Health Care Expenditures Among Older Americans With Cancer. Value in Health. 2004;7(2):186-194..
Predicting Nursing Home Admission: Estimates from a seven-year follow-up of a nationally representative sample of older Americans. Alzheimer Disease and Associated Disorders. 2004;18(2):83-89.