Tobacco Documents Online

Sobue, T., Suzuki, R., Nakayama, N., Inubuse, C., Matsuda, M., Doi, O., Mori, T., Furuse, K., Fukuoka, M., Yasumitsu, T., Kuwabara, 0., Ichigaya, M., Kurata, M., Kuwabara, M., Nakahara, K., Endo, S. and Hattori, S., "Passive Smoking Among Nonsmoking Women and the Relationship Between Indoor Air Pollution and Lung Cancer Incidence- - Results of a Multicenter Case Controlled Study," Gan to Rinsho 36(3): 329-333, 1990 (translation). This case-control study involved 12D hospitalized female cases and 519 hospitalized controls in Osaka, Japan. The authors attempted to elucidate lung cancer risk factors in nonsmoking women, with a focus on "elements in the everyday environment" rather than on occupational exposures. ETS exposure was assessed by questionnaire; only "yes/no" exposure categories are reported (e.g., there are no RRs calculated for intensity or duration exposure proxies). Statistically nonsignificant RRs of 0.94 (95% CI 0.62- 1.40)' for husband's smoking and of 1.45 (95% CI 0.94-2.23) for smoking by other members of the household (usually children) were reported. For childhood exposure, a statistically nonsignificant OR of 1.71 (95% CI 0.95-3.10) was reported for maternal smoking; for paternal smoking, a statistically significantly reduced risk (RR = 0.60, 95% CI 0.40-0.91) was reported for a univariate analysis. The relationships of various types of room heaters to lung cancer were considered. No significant relationships were reported for unvented stoves using gasoline, gas, coal, charcoal briquettes or wood; or for braziers, clay charcoal stoves, or foot warmers using charcoal. The data suggested that past use of straw or wood as a cooking fuel may be a risk'factor for lung cancer among nonsmoking women (for use at age 30, RR = 1.90, 95% CI 1.09- 3.30; at age 15, RR = 1.33, 95% CI 0.87-2.02).