Abstract:
:Nasopharyngeal carcinoma is much more common in Asian countries than in Western countries. However, since the 1980s, nasopharyngeal carcinoma incidence has fallen among both men and women in Hong Kong, and recently a similar trend has also been noted in Singapore. Using data from the Surveillance, Epidemiology, and End Results Program and the US Census, the authors evaluated recent trends in the incidence rates of nasopharyngeal carcinoma among Chinese living in Los Angeles County and in the San Francisco-Oakland (California) metropolitan area. From 1992 to 2002, the rates of nasopharyngeal carcinoma in these two populations decreased in men by 37% (95% confidence interval: -54, -12) but in women by just 1% (95% confidence interval: -40, 64). In Chinese men, the overall decline in incidence was limited primarily to a decline in the rate of type I tumors (differentiated squamous tumors with keratin production). While the reasons underlying the observed patterns of incidence remain to be determined, changes in lifestyle and environment are likely to be contributory factors.
journal_name
Am J Epidemioljournal_title
American journal of epidemiologyauthors
Sun LM,Epplein M,Li CI,Vaughan TL,Weiss NSdoi
10.1093/aje/kwi345subject
Has Abstractpub_date
2005-12-15 00:00:00pages
1174-8issue
12eissn
0002-9262issn
1476-6256pii
kwi345journal_volume
162pub_type
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