Tehran University of Medical Sciences

Science Communicator Platform

Stay connected! Follow us on X network (Twitter):
Share this content! On (X network) By
Breast Cancer Incidence Trends in Golestan, Iran: An Age-Period-Cohort Analysis by Ethnic Region, 2004-2018 Publisher Pubmed



Ghasemikebria F1 ; Fazel A2 ; Semnani S1 ; Etemadi A3 ; Naeimitabiei M2 ; Hasanpourheidari S1 ; Salamat F1 ; Jafaridelouie N1 ; Sedaghat S4 ; Sadeghzadeh H4 ; Akbari M5 ; Mehrjerdian M6 ; Weiderpass E7 ; Roshandel G1 Show All Authors
Authors
  1. Ghasemikebria F1
  2. Fazel A2
  3. Semnani S1
  4. Etemadi A3
  5. Naeimitabiei M2
  6. Hasanpourheidari S1
  7. Salamat F1
  8. Jafaridelouie N1
  9. Sedaghat S4
  10. Sadeghzadeh H4
  11. Akbari M5
  12. Mehrjerdian M6
  13. Weiderpass E7
  14. Roshandel G1
  15. Bray F8
  16. Malekzadeh R9
Show Affiliations
Authors Affiliations
  1. 1. Golestan Research Center of Gastroenterology and Hepatology, Golestan University of Medical Sciences, Gorgan, Iran
  2. 2. Cancer Research Center, Golestan University of Medical Sciences, Gorgan, Iran
  3. 3. Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, United States
  4. 4. Deputy of Public Health, Golestan University of Medical Sciences, Gorgan, Iran
  5. 5. Deputy of Treatment, Golestan University of Medical Sciences, Gorgan, Iran
  6. 6. Department of Pathology, Golestan University of Medical Sciences, Gorgan, Iran
  7. 7. Office of the Director, International Agency for Research on Cancer (IARC), Lyon, France
  8. 8. Cancer Surveillance Branch, International Agency for Research on Cancer (IARC), World Health Organization (WHO), Lyon, France
  9. 9. Digestive Oncology Research Center, Digestive Diseases Research Institute, Tehran University of Medical Sciences, Tehran, Iran

Source: Cancer Epidemiology Published:2024


Abstract

Background: We aimed to examine the effects of age, diagnosis year (calendar period) and birth year (cohort) on the incidence trends of breast cancer among Golestan women, Northeast Iran, 2004–2018. Methods: Incidence data were obtained by residential status (urban/rural) and ethnic region (Turkmens/non-Turkmens). We calculated age-standardized incidence rates (ASRs) per 100,000 person-years. The estimated annual percentage change (EAPC) were calculated, and age-period-cohort (APC) models fitted to assess non-linear effects of period and cohort as incidence rate ratios (IRRs). Results: The total number of female breast cancer cases in Golestan, 2004–2018, were 3853, with an overall ASR of 31.3. We found higher rates in urban population (40.5) and non-Turkmens region (38.5) compared to rural area (20.8) and Turkmens region (20.2), respectively. There were increasing trends in incidence rates overall (EAPC= 4.4; 95%CI: 2.2, 6.7), with greater changes in rural areas (EAPC=5.1), particularly among non-Turkmens (EAPC=5.8). The results of the APC analysis indicate the presence of significant non-linear cohort effects with increasing IRRs across successive birth cohorts (IRR=0.1 and IRR= 2.6 for the oldest and the youngest birth cohorts vs. the reference birth cohort, respectively). Conclusion: We found increasing trends in breast cancer incidence among Golestan women over the study period, with disparities in patterns and trends by residence area and ethnic region. The observed cohort effects suggest an increasing prevalence of key risk factors for breast cancer in this Iranian population. Further investigations are warranted to clarify the relationships between determinants such as reproductive factors and ethnicity in the region. © 2024 Elsevier Ltd
Other Related Docs
34. Epidemiology and Trend of Cancers in the Province of Kerman: Southeast of Iran, Asian Pacific Journal of Cancer Prevention (2015)
43. The Epidemiological and Histological Trend of Bladder Cancer in Iran, Journal of Cancer Research and Therapeutics (2018)