A study of differences in social support.
D000368:Aged; D000369:Aged, 80 and over; D004644:Emotions; D005260:Female; D005851:Geriatric Nursing; D006801:Humans; D007406:Interview, Psychological; D008297:Male; D008393:Marriage; D012737:Sex Factors; D012931:Social Environment; D012944:Social Support