Strain among caregivers: a study of experience in the United States.
D000328:Adult; D000368:Aged; D005190:Family; D005260:Female; D006299:Health Services for the Aged / Q000639:trends*; D006701:Home Nursing / Q000523:psychology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012931:Social Environment; D012944:Social Support; D014481:United States