L'epidemiologia descriptiva del càncer a Tarragona des de 1980 a 2001

Student thesis: Doctoral thesis

Abstract

During the eighties cancer incidence and mortality in Tarragona were lower than in most of European areas but both showed an increasing trend. At that time survival of cancer patients was unknown. The implantation of the Tarragona Cancer Registry allowed to knowledge these initial data and to define as objective of research to verify if cancer incidence and mortality would be higher around 2000 than at the end of the eighties, if the role of risk factors in the increase of the number of incidents cases would be more important than the role of demographic factors and, finally, if survival rates would be similar to the European average.
Methodology used consisted in analysing the Tarragona residents cohort study, in relation to the incidence, the mortality and their temporal evolution. Analysis is also performed on the cancer patients cohort for survival and its temporal evolution. Finally the study of the 31st December 2001 prevalence is performed.
In the period 1998-2001, the age world-standardized incidence rate was 310 in males and 203 in females. The probability of developing a cancer before 85 years of age is of one out of two in males and one out of three in females. The most frequent tumoral types are prostate, lung and urinary bladder in males and breast, colon and corpus uteri in females. During the same period, the age-standardized mortality rate of cancer was 150 in males and 75 in females. The risk of death by cancer before 85 years old was of 28% in males and 15% in females. At European level, the incidence in Tarragona was in the medium-high level in males and in medium-low level in females. The annual percentages of change of the standardized incidence rate between 1982 and 2001 were 2.4% in males and 1.7% in females. Risk factors were responsible for 49% of the increase in the number of annual cases in men and 36% in females. Mortality rate increased until 1988 and maintained stable from this year until 2001. Five-year relative survival of the patients diagnosed in the period 1995-1999 were 47,5% in men and 57,3% in females, and were practically equal to the European average in men and lightly higher in women.
The results include multiple parameters of the major indicators studied (incidence, mortality, potential lost years of life, survival, and prevalence, and their temporal evolution). A variety of tables and figures show these indicators as well as an international comparison of incidence and survival for each type or group of cancers. Data on incidence, mortality and survival for childhood cancer (0 to 14 years old) and elderly cancer (75 and more years old) are presented. Finally, multiple primary cancers (second, third and fourth ones) of the period 1980-2001 and the type of the second cancer in relation to the first one are quantified. The annexes include 29 tables with detailed information, classified by type of tumour, age group and sex, concerning incidence and mortality of the period 1998-2001, the biennial evolution of incidence and mortality and incidence and mortality classified by Health Regions and County.
The Tarragona Cancer Registry is the ideal tool to monitor the magnitude of cancer and the impact of multiple cancer control activities in the Tarragona province population.
Date of Award25 Feb 2009
Original languageCatalan
SupervisorVictor Raul Moreno Aguado (Director) & Joan Borràs Balada (Director)

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