authors Covinsky, K E Eng, C Lui, L Y Sands, L P Sehgal, A R Louise C. Walter, MD Wieland, D Eleazer, G P Yaffe, K
has subject area Aged Aged, 80 and over Caregivers Community Health Services Cross-Sectional Studies Employment Ethnicity Female Frail Elderly Health Services for the Aged Humans Male Multivariate Analysis United States