Determinants of sexual behavior in middle and old age.
D000367:Age Factors; D000368:Aged; D001294:Attitude to Health; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008297:Male; D008393:Marriage; D008487:Medical History Taking; D008593:Menopause; D008603:Mental Health; D008875:Middle Aged; D010549:Personal Satisfaction; D012737:Sex Factors; D012725:Sexual Behavior; D012959:Socioeconomic Factors; D013223:Statistics as Topic; D013997:Time Factors