Open AccessSurvival Estimates for Some Types of Cancer in Brazil and Regions Based on the M:I Ratio
Author(s) -
Rejane de Souza Reis,
Alfredo Scaff
Publication year - 2018
Publication title -
journal of global oncology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.002
H-Index - 17
ISSN - 2378-9506
DOI - 10.1200/jgo.18.55400
Subject(s) - relative survival , medicine , population , cancer , demography , incidence (geometry) , cervical cancer , cancer registry , breast cancer , stomach cancer , survival rate , mortality rate , cervix , standardized mortality ratio , lung cancer , oncology , environmental health , sociology , physics , optics
Background: An indirect measure of cancer survival is an application of the mortality and incidence ratio (M:I). In populations with deficits in population survival studies, such as Brazil, using a methodological alternative is a strategy to estimate population survival. Aim: To calculate the cancer survival in Brazilian population using the mortality to incidence ratio. Methods: The complement of the ratio of adjusted incidence rates and cancer mortality rates [1 − (M:I)] was used as an estimate of relative 5-year survival for female breast, lung, prostate, cervix and stomach. As information about the incidence was extracted through 22 PBCR and the mortality information with the atlas of mortality online. Was calculated the medians of the M:I ratios for regions and Brazil, by sex. Results: The median survival estimate for estimated breast cancer was 74%. The southeast region had the highest median (79%) while the north region had the lowest (68%). For lung cancer, the medians were 13% and 16% (male and female, respectively). Prostate cancer has a median survival estimate of 79% and cervical cancer 64%. Stomach cancer also presented the lowest median survival estimates for both sexes. Conclusion: Survival estimates based on M:I ratio could be an alternative in the absence of population survival studies. However, it does not replace the study of survival with active search, it only allows to know the order of magnitude of the survivors in the absence of these studies. This methodology allows to know an estimate of the relative survival in 5 years of cancer since works of population with active search are scarce in Brazil.