In spite of the great value from the health planning point of view, only a few Cancer Registries have produced measures of prevalence. PREVAL is a computerized program for personal computers that provides prevalence data expressed as number or proportion. The program calculates prevalence, cross-classified by years from diagnosis and age. PREVAL reads data on the vital status, available from those Cancer Registries that have carried out population-based survival studies. Larynx cancer in males has been used as an example. Analysis has been performed on 15-year follow-up data of 840 incidence cases registered during 1976-1987 period from Lombardy Cancer Registry. In 1987, larynx cancer prevalence proportions are 67.6 per 100,000 for patients with up to 5 years from diagnosis and 108.4 per 100,000 for those with up to 10 years. The Authors will provide PREVAL free of charge upon request.
BerrinoF.SantM.VerdecchiaA.CapocacciaR.HakulinenT.EsteveJ. (Eds.): Survival of cancer patients in Europe: The Eurocare Study. Lyon, IARC Scientific Publications132, 1995.
3.
CoeberghJ.W.W.van der HeijdenL.H. (eds): Cancer incidence and survival 1975-1987 in Southeastern Netherlands. Eindhoven Cancer Registry, 1991.
4.
CapocacciaR.MicheliA.BerrinoF.GattaG.SantM.RuzzaM.R.ValenteF.VerdecchiaA.: Time trends of lung and larynx cancers in Italy. Int. J. Cancer, 57: 1–8, 1994.
5.
ENCR. European Network Cancer Registry: network program supported by EU.
6.
FeldmanA.R.KesslerL.MyersM.H.NaughtonM.D.: The prevalence of cancer. Estimates based on the Connecticut tumour registry. N. Engl. J. Med., 31522: 1394–1397, 1986.
7.
MillerB.A.RiesL.A.G.HankeyB.F.KosaryC.L.EdwardsB.K. (Eds). Cancer Statistics Review: 1973-1989, National Cancer Institute. NIH Pub. No. 92-2789, 1992.
ParkinD.M.MuirC.S.WhelanS.L.GaoY.T.FerlayJ.PowellJ.: Cancer incidence in five continents. Lyon, IARC Scientific Publications 120, 1992.
10.
TuliniusH.StormH.PukkalaA.AndersenA.EricsonJ.: APMIS Supplementum. Cancer in the Nordic Countries, 1981–86.31, 1992.
11.
TeppoL.HakamaM.HakulinenT.LehtonenM.SaxenE.: Cancer in Finland 1953-1970: incidence, mortality, prevalence. Acta Pathol. Microbiol. Scand. (A), Suppl.252, 1975.
12.
WHO (World Health Organization) Manual of the international statistical classification of diseases, injuries and causes of death (Based on the Recommendations of the Ninth Revision Conference, 1975), Geneva.
