Another Evidence of an Increasing Trend in the Incidence of Breast Cancer in Developing Countries Over the Recent Years

Zahedi, Razieh; Molavi Vardanjani, Hossein; Baneshi, Mohammad Reza; Haghdoost, Ali Akbar; Malekpour Afshar, Reza; Zolala, Farzaneh

doi:10.30476/mejc.2021.85250.1263

Another Evidence of an Increasing Trend in the Incidence of Breast Cancer in Developing Countries Over the Recent Years

Document Type : Original Article(s)

Authors

Razieh Zahedi ¹

Hossein Molavi Vardanjani ²

Mohammad Reza Baneshi ³

Ali Akbar Haghdoost ³

Reza Malekpour Afshar ⁴

Farzaneh Zolala ⁵

¹ Research Center for Non-communicable Diseases, Jahrom University of Medical Sciences, Jahrom, Iran

² Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran

³ Modeling in Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran

⁴ Pathology and Stem Cell Research Center, Kerman University of Medical Sciences, Kerman, Iran

⁵ Social Determinants of Health Research Center, Institute for Futures Studies in Health, Kerman University of Medical Sciences, Kerman, Iran

https://doi.org/10.30476/mejc.2021.85250.1263

Abstract

Background: We examined and estimated the trend of breast cancer incidence in Kerman, the largest province in Iran.
Method: Having compiling the data of new cases from three sources (cancer registry, pathology, radiotherapy) in this longitudinal study, the number of untouched cases was estimated using log-linear model. We estimated the annual age-standardized rate (ASR) per 100,000 women in 2001-2015. We utilized joint point regression method to estimate the trend of breast cancer incidence during the examined years.
Results: The ASR of breast cancer increased from 25 in 2001-2005 to 37 in 2011- 2015, showing that the annual average percentage increased by 5.9% (95% Confidence Interval: 3.5, 8.4, p <0.001). Moreover, during this period, the completeness of the cancer registry increased from 16% in the first five years to 70% in the last five years.
Conclusion: Our findings revealed that the coverage of the cancer registry increased significantly. It seems that part of the increasing trend of the reported cancer incidence was attributed to the enhancement of the cancer registry scheme, but our findings suggested that the real incidence of breast cancer had a growing trend.

Keywords

Breast neoplasms

Cancer registry

Incidence

Iran

How to cite this article:

Zahedi R, Molavi Vardanjani H, Baneshi MR, Haghdoost AA, Malekpour Afshar R, Zolala F. Another evidence of an increasing trend in the incidence of breast cancer in developing countries over the recent years. Middle East J Cancer. 2021;12(4):506-14. doi: 10.30476/mejc.2021.85250.126 3.