Revista de Saúde Pública
On-line version ISSN 1518-8787Print version ISSN 0034-8910
RUFFINO NETTO, Antonio. Relation between prevalence, incidence and average duration of disease. Rev. Saúde Pública [online]. 1973, vol.7, n.4, pp.331-334. ISSN 1518-8787. http://dx.doi.org/10.1590/S0034-89101973000400002.
A derivation of the relation Pt = I. d where: Pt = pointprevalence; I = incidence; d = average durantion of disease is presented given the disease is stable, that is, the incidence and duration remained constant over time.
Keywords : Epidemiology [quantitative methods]; Prevalence; Incidence.