Please use this identifier to cite or link to this item: https://doi.org/10.1002/ijc.30095
Title: The impact of breast cancer-specific birth cohort effects among younger and older Chinese populations
Authors: Sung, Hyuna
Rosenberg, Philip S
Chen, Wan-Qing
Hartman, Mikael 
Lim, Wei-yen 
Chia, Kee Seng 
Mang, Oscar Wai-Kong
Lapah, TSE
Anderson, William F
Yang, Xiaohong R
Keywords: Science & Technology
Life Sciences & Biomedicine
Oncology
breast cancer
China
birth cohort effect
westernization
age group
AGE
PERIOD
TRENDS
RISK
SINGAPORE
MODELS
Issue Date: 1-Aug-2016
Publisher: WILEY
Citation: Sung, Hyuna, Rosenberg, Philip S, Chen, Wan-Qing, Hartman, Mikael, Lim, Wei-yen, Chia, Kee Seng, Mang, Oscar Wai-Kong, Lapah, TSE, Anderson, William F, Yang, Xiaohong R (2016-08-01). The impact of breast cancer-specific birth cohort effects among younger and older Chinese populations. INTERNATIONAL JOURNAL OF CANCER 139 (3) : 527-534. ScholarBank@NUS Repository. https://doi.org/10.1002/ijc.30095
Abstract: Historically low breast cancer incidence rates among Asian women have risen worldwide; purportedly due to the adoption of a "Western" life style among younger generations (i.e., the more recent birth cohorts). However, no study has simultaneously compared birth cohort effects between both younger and older women in different Asian and Western populations. Using cancer registry data from rural and urban China, Singapore and the United States (1990-2008), we estimated age-standardized incidence rates (ASR), annual percentage change (EAPC) in the ASR, net drifts, birth cohort specific incidence rates and cohort rate ratios (CRR). Younger (30-49 years, 1943-1977 birth cohorts) and older women (50-79 years; 1913-1957 birth cohorts) were assessed separately. CRRs among Chinese populations were estimated using birth cohort specific rates with US non-Hispanic white women (NHW) serving as the reference population with an assigned CRR of 1.0. We observed higher EAPCs and net drifts among those Chinese populations with lower ASRs. Similarly, we observed the most rapidly increasing cohort-specific incidence rates among those Chinese populations with the lowest baseline CRRs. Both trends were more significant among older than younger women. Average CRRs were 0.06-0.44 among older and 0.18-0.81 among younger women. Rapidly rising cohort specific rates have narrowed the historic disparity between Chinese and US NHW breast cancer populations particularly in regions with the lowest baseline rates and among older women. Future analytic studies are needed to investigate risk factors accounting for the rapid increase of breast cancer among older and younger women separately in Asian populations.
Source Title: INTERNATIONAL JOURNAL OF CANCER
URI: https://scholarbank.nus.edu.sg/handle/10635/209217
ISSN: 00207136,1097
0215
DOI: 10.1002/ijc.30095
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