Please use this identifier to cite or link to this item: https://doi.org/10.1002/cncr.23788
Title: Incense use and respiratory tract carcinomas: A prospective cohort study
Authors: Friborg, J.T.
Yuan, J.-M.
Wang, R.
Koh, W.-P. 
Lee, H.-P. 
Yue, M.C.
Keywords: Carcinoma
Chinese
Incense
Respiratory tract
Issue Date: 1-Oct-2008
Citation: Friborg, J.T., Yuan, J.-M., Wang, R., Koh, W.-P., Lee, H.-P., Yue, M.C. (2008-10-01). Incense use and respiratory tract carcinomas: A prospective cohort study. Cancer 113 (7) : 1676-1684. ScholarBank@NUS Repository. https://doi.org/10.1002/cncr.23788
Abstract: BACKGROUND. Incense use is an integral part of daily life in large parts of Asia. The burning of incense is a powerful producer of particulate matter and the smoke contains a multitude of well-characterized carcinogens. However, to the authors' knowledge, no convincing association has been reported between exposure to incense smoke and the development of cancer. Therefore, the relation between incense use and the risk of respiratory tract carcinomas was analyzed in a prospective cohort study. METHODS. Between 1993 and 1998, a population-based cohort of 61,320 Singapore Chinese who were free of cancer and ages 45 to 74 years completed a comprehensive interview regarding living conditions and dietary and lifestyle factors. Through linkage to population-based registries, the cohort was followed through 2005 and cancer occurrence determined. The relative risk for these cancers associated with incense use was estimated using a Cox proportional hazards model. RESULTS. A total of 325 upper respiratory tract (UPT) carcinomas and 821 lung carcinomas were observed during follow-up. Incense use was associated with a significantly increased risk of UPT carcinomas other than nasopharyngeal, whereas no overall effect was observed on lung cancer. The duration and intensity of incense use were associated with an increased risk of squamous cell carcinomas in the entire respiratory tract (P for trend 5 .004), whereas there was no significant association noted between incense use and nonsquamous cell carcinomas. The relative risk of squamous cell carcinomas among long-term incense users was 1.8 (95% confidence interval [95% CI], 1.2-2.6; P = .004) in the entire respiratory tract. CONCLUSIONS. The results of the current study indicate that long-term use of incense is associated with an increased risk of squamous cell carcinoma of the respiratory tract. ©2008 American Cancer Society.
Source Title: Cancer
URI: http://scholarbank.nus.edu.sg/handle/10635/108425
ISSN: 0008543X
DOI: 10.1002/cncr.23788
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