PT  - JOURNAL ARTICLE
AU  - Sadri, Gholamhossein
AU  - Mahjub, Hossein
TI  - Passive or active smoking, which is more relevant to breast cancer.
DP  - 2007 Feb 01
TA  - Saudi Medical Journal
PG  - 254--258
VI  - 28
IP  - 2
4099  - http://smj.org.sa/content/28/2/254.short
4100  - http://smj.org.sa/content/28/2/254.full
SO  - Saudi Med J2007 Feb 01; 28
AB  - OBJECTIVES: To examine the risk of breast cancer associated with passive and active smoking and to explore risk heterogeneity among studies.METHODS: We conducted this study in Iran during the year 2006. Fifteen published studies on smoking and breast cancer met the defined criteria. Pooled odds ratio (OR) estimates for female breast cancer were calculated. The active and passive smokers were compared with women categorized as never regularly exposed to tobacco smoke.RESULTS: The pooled risk estimate for breast cancer associated with passive smoking among non-smokers was 1.38 (95% confidence interval [CI]; 1.16-1.65). The pooled OR for active smokers was 1.25 (95% CI; 1.11-1.41). Also, the combined OR for passive and active smokers related to breast cancer was 1.30 (95% CI; 1.17-1.45).CONCLUSIONS: Based on the results of the pooled analysis, it can be concluded both passive and active smoking equally increase the risk of female breast cancer.