Oliver W Scott1, Sandar Tin Tin2, Susan M Bigby3, J Mark Elwood2. 1. Section of Epidemiology and Biostatistics, School of Population Health, University of Auckland, 261 Morrin Road, St Johns, Auckland, 1072, New Zealand. o.scott@auckland.ac.nz. 2. Section of Epidemiology and Biostatistics, School of Population Health, University of Auckland, 261 Morrin Road, St Johns, Auckland, 1072, New Zealand. 3. Counties Manukau Health Laboratory Services, Middlemore Hospital, Counties Manukau District Health Board, 100 Hospital Road, Otahuhu, Auckland, 2025, New Zealand.
Abstract
PURPOSE: Endometrial cancer accounts for 3.9% of all female cancers globally, and its incidence appears to be increasing in women under 40 years of age. This paper investigated ethnic-specific trends in endometrial cancer across different age groups in New Zealand. METHODS: Women who were diagnosed with endometrial cancer between 1996 and 2012 were identified from the New Zealand Cancer Registry. Annual age-standardized incidence and mortality rates were calculated for each ethnicity (Māori, Pacific, and non-Māori non-Pacific) in four age groups (< 40, 40-49, 50-74, and 75 +). The estimates were adjusted for hysterectomy. Joinpoint regression analysis was used to assess trends over time and annual percentage changes (APCs) were estimated. RESULTS: Between 1996 and 2012, age-standardized incidence rates increased in all women and significantly in the < 40, 40-49, and 50-74 age groups (APC 9.22, 3.56, and 1.65 respectively). Incidence rates were highest in Pacific women and increased most rapidly in those under 50 years of age (APC 9.36). Conversely, age-standardized mortality rates decreased in all women and significantly in the 50-74 and 75 + age groups (APC - 5.25 and - 5.06 respectively), with the highest rate observed in Pacific women. CONCLUSION: Pacific women had the highest incidence of endometrial cancer and the trend was increasing, particularly in young women. This could be attributed, at least in part, to a high and increasing rate of obesity in these women and should be explored in future research.
PURPOSE:Endometrial cancer accounts for 3.9% of all female cancers globally, and its incidence appears to be increasing in women under 40 years of age. This paper investigated ethnic-specific trends in endometrial cancer across different age groups in New Zealand. METHODS:Women who were diagnosed with endometrial cancer between 1996 and 2012 were identified from the New Zealand Cancer Registry. Annual age-standardized incidence and mortality rates were calculated for each ethnicity (Māori, Pacific, and non-Māori non-Pacific) in four age groups (< 40, 40-49, 50-74, and 75 +). The estimates were adjusted for hysterectomy. Joinpoint regression analysis was used to assess trends over time and annual percentage changes (APCs) were estimated. RESULTS: Between 1996 and 2012, age-standardized incidence rates increased in all women and significantly in the < 40, 40-49, and 50-74 age groups (APC 9.22, 3.56, and 1.65 respectively). Incidence rates were highest in Pacific women and increased most rapidly in those under 50 years of age (APC 9.36). Conversely, age-standardized mortality rates decreased in all women and significantly in the 50-74 and 75 + age groups (APC - 5.25 and - 5.06 respectively), with the highest rate observed in Pacific women. CONCLUSION: Pacific women had the highest incidence of endometrial cancer and the trend was increasing, particularly in young women. This could be attributed, at least in part, to a high and increasing rate of obesity in these women and should be explored in future research.
Entities:
Keywords:
Endometrial cancer; Incidence; New Zealand; Obesity; Pacific
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