Jayalekshmi P A, Gangadharan P, Akiba S, Nair R R K, Tsuji M, Rajan B
Regional Cancer Center, Trivandrum, Kerala, India.
Br J Cancer. 2009 Mar 10;100(5):848-52. doi: 10.1038/sj.bjc.6604907.
This study examined oral cancer in a cohort of 78 140 women aged 30-84 years in Karunagappally, Kerala, India, on whom baseline information was collected on lifestyle, including tobacco chewing, and sociodemographic factors during the period 1990-1997. By the end of 2005, 92 oral cancer cases were identified by the Karunagappally Cancer Registry. Poisson regression analysis of grouped data, taking into account age and income, showed that oral cancer incidence was strongly related to daily frequency of tobacco chewing (P<0.001) and was increased 9.2-fold among women chewing tobacco 10 times or more a day. The risk increased with the duration of tobacco chewing during the first 20 years of tobacco chewing. Age at starting tobacco chewing was not significantly related to oral cancer risk. This is the first cohort study of oral cancer in relation to tobacco chewing among women.
本研究对印度喀拉拉邦卡鲁纳加帕利地区78140名年龄在30至84岁之间的女性进行了口腔癌调查。在1990年至1997年期间收集了她们的生活方式(包括嚼烟情况)和社会人口学因素等基线信息。到2005年底,卡鲁纳加帕利癌症登记处确认了92例口腔癌病例。在考虑年龄和收入的情况下,对分组数据进行的泊松回归分析表明,口腔癌发病率与每日嚼烟频率密切相关(P<0.001),每天嚼烟10次或更多次的女性患口腔癌的风险增加了9.2倍。在开始嚼烟的前20年里,口腔癌风险随着嚼烟时间的延长而增加。开始嚼烟的年龄与口腔癌风险无显著关联。这是第一项关于女性嚼烟与口腔癌关系的队列研究。