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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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American Society of Clinical Oncology
2017-08-01
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| Series: | Journal of Global Oncology |
| Online Access: | http://ascopubs.org/doi/10.1200/JGO.17.00024 |
| _version_ | 1818870312998010880 |
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| author | Anne Karin da Mota Borges Adalberto Miranda-Filho Sérgio Koifman Rosalina Jorge Koifman |
| author_facet | Anne Karin da Mota Borges Adalberto Miranda-Filho Sérgio Koifman Rosalina Jorge Koifman |
| author_sort | Anne Karin da Mota Borges |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-19T12:05:02Z |
| format | Article |
| id | doaj.art-4329c54155b84e15a948cf242f968f42 |
| institution | Directory Open Access Journal |
| issn | 2378-9506 |
| language | English |
| last_indexed | 2024-12-19T12:05:02Z |
| publishDate | 2017-08-01 |
| publisher | American Society of Clinical Oncology |
| record_format | Article |
| series | Journal of Global Oncology |
| spelling | doaj.art-4329c54155b84e15a948cf242f968f422022-12-21T20:22:23ZengAmerican Society of Clinical OncologyJournal of Global Oncology2378-95062017-08-01411110.1200/JGO.17.000241Thyroid Cancer Incidences From Selected South America Population-Based Cancer Registries: An Age-Period-Cohort StudyAnne Karin da Mota BorgesAdalberto Miranda-FilhoSérgio KoifmanRosalina Jorge KoifmanPurpose: 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.http://ascopubs.org/doi/10.1200/JGO.17.00024 |
| spellingShingle | Anne Karin da Mota Borges Adalberto Miranda-Filho Sérgio Koifman Rosalina Jorge Koifman Thyroid Cancer Incidences From Selected South America Population-Based Cancer Registries: An Age-Period-Cohort Study Journal of Global Oncology |
| 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 |
| url | http://ascopubs.org/doi/10.1200/JGO.17.00024 |
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