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Title: Effect of childbirth after treatment on long-term survival from breast cancer
Authors: Verkooijen, H.M. 
Lim, G.H.
Czene, K.
Bhalla, V.
Chow, K.Y.
Yap, K.P.L.
Chia, K.S. 
Hartman, M. 
Issue Date: Aug-2010
Citation: Verkooijen, H.M., Lim, G.H., Czene, K., Bhalla, V., Chow, K.Y., Yap, K.P.L., Chia, K.S., Hartman, M. (2010-08). Effect of childbirth after treatment on long-term survival from breast cancer. British Journal of Surgery 97 (8) : 1253-1259. ScholarBank@NUS Repository.
Abstract: Background: This study quantified long-term absolute and relative mortality risks of survivors of breast cancer with subsequent childbirth. Methods: The Singapore Birth Register (n = 319437), Swedish Multi-Generation Register (n = 11 million) and population-based cancer registries were linked to identify 492 women with childbirth after breast cancer. For these women, cumulative mortality risks and standardized mortality ratios (SMRs) were calculated and compared with those of 8529 women aged less than 40 years with breast cancer without subsequent childbirth, and with those predicted by Adjuvantl Online. Resulta: Women with subsequent childbirth had a lower 15-year cumulative overall mortality rate than other women with breast cancer (16-8 (95 percent confidence interval (ci.) 13-3 to 20-9) versus 40-7 (39-5 to 41-9) per cent), but a higher relative mortality risk than the background population (SMR 13-6, 95 percent c.i. 10-6 to 17-3). Mortality risks decreased significantly with increasing interval between diagnosis and subsequent childbirth. Mean 10-year cumulative mortality risks of women with subsequent childbirth were within the range of 10-year mortality predicted by Adjuvant! Online for women with Tl NO tumours in otherwise perfect health. Conclusion: This study reinforced the view that pregnancy after breast cancer is not detrimental to survival. However, women who gave birth after this diagnosis had substantially higher mortality risks than young women in the general population. This information may be a valuable addition to routine mortality estimates. Copyright © 2010 British Journal of Surgery Society Ltd Published by John Wiley & Sons Ltd.
Source Title: British Journal of Surgery
ISSN: 00071323
DOI: 10.1002/bjs.7131
Appears in Collections:Staff Publications

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