TY  - JOUR
T1  - ANalysis of passive smoking and breast cancer of limited value—reply
AU  - Xue F, Willett WC, Rosner BA, Hankinson SE, Michels KB
Y1  - 2011/09/12
N1  - 10.1001/archinternmed.2011.384
JO  - Archives of Internal Medicine
SP  - 1508
EP  - 1510
VL  - 171
IS  - 16
N2  - 
Because the assessment of passive smoking relies heavily on subjective recall, which is likely to differ between cases and noncases, results from case-control studies are likely biased.1 Our results of no association between passive smoking and the incidence of breast cancer is consistent with 7 of 8 cohort studies published up to December 2006.2 Three more recent cohort studies produced conflicting results3- 5: one identified an increased incidence only associated with the longest duration of exposure in childhood and adulthood,3 one identified an marginally increased incidence associated with the highest cumulative exposure in terms of both duration and intensity after age 20 years,4 and the other identified no association.5 Another recent large prospective cohort study in combination with a meta-analysis of all published studies up to January 2008 concluded there was no association as well.1 Therefore, evidences from the majority of cohort studies suggest a null association between passive smoking and breast cancer risk.

SN  - 0003-9926
M3  - doi: 10.1001/archinternmed.2011.384
UR  - http://dx.doi.org/10.1001/archinternmed.2011.384
ER  -