Cohort analysis with national survey data.
D000328:Adult; D000368:Aged; D000375:Aging; D005260:Female; D006801:Humans; D008297:Male; D008722:Methods; D008875:Middle Aged; D012494:Sampling Studies; D012917:Social Adjustment; D012919:Social Behavior; D013223:Statistics as Topic; D014481:United States