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Breast Cancer Incidence Trends in Isfahan Province Compared with those in England over the Period 2001–2013

BACKGROUND: Figures from Iranian cancer registries indicate that Isfahan ranks first in female breast cancer incidence. Although few previous studies have examined whether the breast cancer incidence trend in Isfahan province has increased over a given period of time, this study employed a joint poi...

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Autores principales: Ainvand, Marziyeh H., Shakibaei, Najmeh, Ravankhah, Zahra, Yadegarfar, Ghasem
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Wolters Kluwer - Medknow 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8356948/
https://www.ncbi.nlm.nih.gov/pubmed/34447496
http://dx.doi.org/10.4103/ijpvm.IJPVM_360_19
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author Ainvand, Marziyeh H.
Shakibaei, Najmeh
Ravankhah, Zahra
Yadegarfar, Ghasem
author_facet Ainvand, Marziyeh H.
Shakibaei, Najmeh
Ravankhah, Zahra
Yadegarfar, Ghasem
author_sort Ainvand, Marziyeh H.
collection PubMed
description BACKGROUND: Figures from Iranian cancer registries indicate that Isfahan ranks first in female breast cancer incidence. Although few previous studies have examined whether the breast cancer incidence trend in Isfahan province has increased over a given period of time, this study employed a joint point regression analysis to answer the same question. Moreover, it compared the data of Isfahan province, from a developing country, with those of England, as a representative of developed countries, and tried to explain the causes of the differences observed between the trends. METHODS: This repeated cross-sectional study was conducted on the data of 6057 women in Isfahan province and of 141,011 women in England with breast cancer over the years 2001–2013. The incidence rates were calculated using direct standardization method and based on the 2013 standard European population. For an analysis of the trends in breast cancer incidence rates, Joint Point Regression program, version 4.3.1.0, released in April 2016, was employed. RESULTS: The mean age-standardized incidence rate (ASR) was calculated to be 34.7 per100,000 population over the years 2001 to 2013, which indicated an increase from 22 to 68 in Isfahan province. The corresponding mean ASR for England has also risen from 147.5 to 170.1 per 100,000 women during the same time period. The average annual percentage changes (AAPCs) for Isfahan and England were also calculated to be 9.6 and 1.1, respectively. This indicated an increasing trend in breast cancer incidence rates for Isfahan province over the period in question. CONCLUSIONS: The drastic discrepancy in breast cancer incidence rates between these two regions may be attributed to differences in an improved cancer registry system in Iran and women's developing awareness of the cancer over time.
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spelling pubmed-83569482021-08-25 Breast Cancer Incidence Trends in Isfahan Province Compared with those in England over the Period 2001–2013 Ainvand, Marziyeh H. Shakibaei, Najmeh Ravankhah, Zahra Yadegarfar, Ghasem Int J Prev Med Original Article BACKGROUND: Figures from Iranian cancer registries indicate that Isfahan ranks first in female breast cancer incidence. Although few previous studies have examined whether the breast cancer incidence trend in Isfahan province has increased over a given period of time, this study employed a joint point regression analysis to answer the same question. Moreover, it compared the data of Isfahan province, from a developing country, with those of England, as a representative of developed countries, and tried to explain the causes of the differences observed between the trends. METHODS: This repeated cross-sectional study was conducted on the data of 6057 women in Isfahan province and of 141,011 women in England with breast cancer over the years 2001–2013. The incidence rates were calculated using direct standardization method and based on the 2013 standard European population. For an analysis of the trends in breast cancer incidence rates, Joint Point Regression program, version 4.3.1.0, released in April 2016, was employed. RESULTS: The mean age-standardized incidence rate (ASR) was calculated to be 34.7 per100,000 population over the years 2001 to 2013, which indicated an increase from 22 to 68 in Isfahan province. The corresponding mean ASR for England has also risen from 147.5 to 170.1 per 100,000 women during the same time period. The average annual percentage changes (AAPCs) for Isfahan and England were also calculated to be 9.6 and 1.1, respectively. This indicated an increasing trend in breast cancer incidence rates for Isfahan province over the period in question. CONCLUSIONS: The drastic discrepancy in breast cancer incidence rates between these two regions may be attributed to differences in an improved cancer registry system in Iran and women's developing awareness of the cancer over time. Wolters Kluwer - Medknow 2021-05-27 /pmc/articles/PMC8356948/ /pubmed/34447496 http://dx.doi.org/10.4103/ijpvm.IJPVM_360_19 Text en Copyright: © 2021 International Journal of Preventive Medicine https://creativecommons.org/licenses/by-nc-sa/4.0/This is an open access journal, and articles are distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 License, which allows others to remix, tweak, and build upon the work non-commercially, as long as appropriate credit is given and the new creations are licensed under the identical terms.
spellingShingle Original Article
Ainvand, Marziyeh H.
Shakibaei, Najmeh
Ravankhah, Zahra
Yadegarfar, Ghasem
Breast Cancer Incidence Trends in Isfahan Province Compared with those in England over the Period 2001–2013
title Breast Cancer Incidence Trends in Isfahan Province Compared with those in England over the Period 2001–2013
title_full Breast Cancer Incidence Trends in Isfahan Province Compared with those in England over the Period 2001–2013
title_fullStr Breast Cancer Incidence Trends in Isfahan Province Compared with those in England over the Period 2001–2013
title_full_unstemmed Breast Cancer Incidence Trends in Isfahan Province Compared with those in England over the Period 2001–2013
title_short Breast Cancer Incidence Trends in Isfahan Province Compared with those in England over the Period 2001–2013
title_sort breast cancer incidence trends in isfahan province compared with those in england over the period 2001–2013
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8356948/
https://www.ncbi.nlm.nih.gov/pubmed/34447496
http://dx.doi.org/10.4103/ijpvm.IJPVM_360_19
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