The concepts of prevalence and incidence as applied to the study of development and duration of disease.
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D004813:Epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008403:Mass Screening; D008875:Middle Aged; D009026:Mortality; D009369:Neoplasms / Q000453:epidemiology; D011379:Prognosis; D013223:Statistics as Topic; D014626:Vaginal Smears