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Cadernos de Saúde Pública
On-line version ISSN 1678-4464
ALVES, Christiane Maria Meurer; BASTOS, Ronaldo Rocha and GUERRA, Maximiliano Ribeiro. Mortality due to cancer of the uterine cervix in the state of Minas Gerais, Brazil, 1980-2005: period and cohort analysis. Cad. Saúde Pública [online]. 2010, vol.26, n.7, pp.1446-1456. ISSN 1678-4464. http://dx.doi.org/10.1590/S0102-311X2010000700024.
This study identifies the period and cohort effects on the decreasing mortality trend of cancer of the uterine cervix and of the uterus, part unspecified, in the state of Minas Gerais, Brazil, during the period 1980-2005. 11,243 cases were included. A non-parametric method was used to calculate Z statistics and p-values. The cohorts were assessed one by one and also in blocks of three, so as to allow for a larger number of comparisons to be made. Greater than expected mortality reduction was observed for the cohort blocks of women born in 1913-1920; 1927-1936; 1937-1946; 1949-1956; 1963-1970; and 1969-1976. For the 1901-1908 and 1921-1928 cohort blocks a smaller than expected mortality decrease was found. As for period effect, we found a greater than expected reduction for the 2000-2001 period, in comparison with the previous one. The study suggests the existence of a significant cohort effect on mortality due to cancer of the uterine cervix in the study population, and such results have been placed in their social and political contexts.
Keywords : Uterine Cervical Neoplasms; Mortality; Cohort Effect; Period Effect.