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Thyroid Cancer Incidences From Selected South America Population-Based Cancer Registries: An Age-Period-Cohort Study
PURPOSE: The incidence of thyroid cancer (TC) has increased substantially worldwide. However, there is a lack of knowledge about age-period-cohort (APC) effects on incidence rates in South American countries. This study describes the TC incidence trends and analyzes APC effects in Cali, Colombia; Co...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Society of Clinical Oncology
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6180755/ https://www.ncbi.nlm.nih.gov/pubmed/30241178 http://dx.doi.org/10.1200/JGO.17.00024 |
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author | Borges, Anne Karin da Mota Miranda-Filho, Adalberto Koifman, Sérgio Koifman, Rosalina Jorge |
author_facet | Borges, Anne Karin da Mota Miranda-Filho, Adalberto Koifman, Sérgio Koifman, Rosalina Jorge |
author_sort | Borges, Anne Karin da Mota |
collection | PubMed |
description | PURPOSE: The incidence of thyroid cancer (TC) has increased substantially worldwide. However, there is a lack of knowledge about age-period-cohort (APC) effects on incidence rates in South American countries. This study describes the TC incidence trends and analyzes APC effects in Cali, Colombia; Costa Rica; Goiânia, Brazil; and Quito, Ecuador. MATERIALS AND METHODS: Data were obtained from the Cancer Incidence in Five Continents series, and the crude and age-standardized incidence rates were calculated. Trends were assessed using the estimated annual percentage change, and APC models were estimated using Poisson regression for individuals between age 20 and 79 years. RESULTS: An increasing trend in age-standardized incidence rates was observed among women from Goiânia (9.2%), Costa Rica (5.7%), Quito (4.0%), and Cali (3.4%), and in men from Goiânia (10.0%) and Costa Rica (3.4%). The APC modeling showed that there was a period effect in all regions and for both sexes. Increasing rate ratios were observed among women over the periods. The best fit model was the APC model in women from all regions and in men from Quito, whereas the age-cohort model showed a better fit in men from Cali and Costa Rica, and the age-drift model showed a better fit among men from Goiânia. CONCLUSION: These findings suggest that overdiagnosis is a possible explanation for the observed increasing pattern of TC incidence. However, some environmental exposures may also have contributed to the observed increase. |
format | Online Article Text |
id | pubmed-6180755 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | American Society of Clinical Oncology |
record_format | MEDLINE/PubMed |
spelling | pubmed-61807552018-11-13 Thyroid Cancer Incidences From Selected South America Population-Based Cancer Registries: An Age-Period-Cohort Study Borges, Anne Karin da Mota Miranda-Filho, Adalberto Koifman, Sérgio Koifman, Rosalina Jorge J Glob Oncol Original Reports PURPOSE: The incidence of thyroid cancer (TC) has increased substantially worldwide. However, there is a lack of knowledge about age-period-cohort (APC) effects on incidence rates in South American countries. This study describes the TC incidence trends and analyzes APC effects in Cali, Colombia; Costa Rica; Goiânia, Brazil; and Quito, Ecuador. MATERIALS AND METHODS: Data were obtained from the Cancer Incidence in Five Continents series, and the crude and age-standardized incidence rates were calculated. Trends were assessed using the estimated annual percentage change, and APC models were estimated using Poisson regression for individuals between age 20 and 79 years. RESULTS: An increasing trend in age-standardized incidence rates was observed among women from Goiânia (9.2%), Costa Rica (5.7%), Quito (4.0%), and Cali (3.4%), and in men from Goiânia (10.0%) and Costa Rica (3.4%). The APC modeling showed that there was a period effect in all regions and for both sexes. Increasing rate ratios were observed among women over the periods. The best fit model was the APC model in women from all regions and in men from Quito, whereas the age-cohort model showed a better fit in men from Cali and Costa Rica, and the age-drift model showed a better fit among men from Goiânia. CONCLUSION: These findings suggest that overdiagnosis is a possible explanation for the observed increasing pattern of TC incidence. However, some environmental exposures may also have contributed to the observed increase. American Society of Clinical Oncology 2017-08-21 /pmc/articles/PMC6180755/ /pubmed/30241178 http://dx.doi.org/10.1200/JGO.17.00024 Text en © 2017 by American Society of Clinical Oncology http://creativecommons.org/licenses/by/4.0/ Licensed under the Creative Commons Attribution 4.0 License: http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Original Reports Borges, Anne Karin da Mota Miranda-Filho, Adalberto Koifman, Sérgio Koifman, Rosalina Jorge Thyroid Cancer Incidences From Selected South America Population-Based Cancer Registries: An Age-Period-Cohort Study |
title | Thyroid Cancer Incidences From Selected South America
Population-Based Cancer Registries: An Age-Period-Cohort Study |
title_full | Thyroid Cancer Incidences From Selected South America
Population-Based Cancer Registries: An Age-Period-Cohort Study |
title_fullStr | Thyroid Cancer Incidences From Selected South America
Population-Based Cancer Registries: An Age-Period-Cohort Study |
title_full_unstemmed | Thyroid Cancer Incidences From Selected South America
Population-Based Cancer Registries: An Age-Period-Cohort Study |
title_short | Thyroid Cancer Incidences From Selected South America
Population-Based Cancer Registries: An Age-Period-Cohort Study |
title_sort | thyroid cancer incidences from selected south america
population-based cancer registries: an age-period-cohort study |
topic | Original Reports |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6180755/ https://www.ncbi.nlm.nih.gov/pubmed/30241178 http://dx.doi.org/10.1200/JGO.17.00024 |
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