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studies_on_the_abortion-breast_cancer_link [2015/07/16 08:06]
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studies_on_the_abortion-breast_cancer_link [2017/06/12 11:00] (current)
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 ==========Studies on the Abortion-Breast Cancer Link========== ==========Studies on the Abortion-Breast Cancer Link==========
  
-//Research Synthesis//: ​[[http://downloads.frc.org/EF/EF14B56.pdf|Induced Abortion and Breast Cancer]]+The numerical risks associated with induced abortion (and its related circumstances,​ which vary by study) are listed for each study below.((This entry draws heavily from [[http://marri.us/research/​research-papers/​induced-abortion-and-breast-cancer/|Induced Abortion and Breast Cancer]].)) The [[common_problems_in_abortion-breast_cancer_studies|quality of the studies]] assessing the relationship between induced abortion and breast cancer varies. Many studies concerning breast cancer risk have shown induced abortion to be a risk for breast cancer, in both western and non-western societies. Of the 72 epidemiological studies we have assessed that differentiate induced from spontaneous abortions (or whose data have been re-analyzed to do so), 21 studies show some positive and significant relationship between induced abortion and breast cancer. Seven studies show a positive and marginally significant relationship between the two. Two ecological epidemiological studies have also shown an association between the two. 
  
 ^No. ^Year ^Reference ^OR or RR (95% CI)((**BC**- Breast cancer \\ **IA**- Induced abortion \\ **FFTP**- First full-term pregnancy \\ **Luminal A cancer**- Estrogen positive and HER2 negative \\ **Nulliparous**- Has never given birth \\ **Parous**- Has given birth \\ *Odds ratio obtained from 1996 Brind)) ^Statistically Significant ^Positive or Negative Correlation ^Country or Population ^  ^No. ^Year ^Reference ^OR or RR (95% CI)((**BC**- Breast cancer \\ **IA**- Induced abortion \\ **FFTP**- First full-term pregnancy \\ **Luminal A cancer**- Estrogen positive and HER2 negative \\ **Nulliparous**- Has never given birth \\ **Parous**- Has given birth \\ *Odds ratio obtained from 1996 Brind)) ^Statistically Significant ^Positive or Negative Correlation ^Country or Population ^ 
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 |71 |2013 |S. Jabeen, M. Haque, J. Islam, M.Z. Hossain, A. Begum, and M.A. Kashem, "​Breast Cancer and Some Epidemiological Factors: A Hospital Based Study,"​ //Journal of Dhaka Medical College// 22, no. 1 (2013): 61-66. |20.62 |No |Positive |Bangladesh | |71 |2013 |S. Jabeen, M. Haque, J. Islam, M.Z. Hossain, A. Begum, and M.A. Kashem, "​Breast Cancer and Some Epidemiological Factors: A Hospital Based Study,"​ //Journal of Dhaka Medical College// 22, no. 1 (2013): 61-66. |20.62 |No |Positive |Bangladesh |
 |72 |2013 |Ramchandra Kamath, Kamaleshwar S. Mahajan, Lena Ashok, T.S. Sanal, "A study on risk factors of bresat cancer among patients attending the tertiary care hospital, in Udupi district,"​ //Indian Journal of Community Medicine// 38, no. 2 (2013): 95-99. |6.38 (.99-40.81) |No |Positive |India | |72 |2013 |Ramchandra Kamath, Kamaleshwar S. Mahajan, Lena Ashok, T.S. Sanal, "A study on risk factors of bresat cancer among patients attending the tertiary care hospital, in Udupi district,"​ //Indian Journal of Community Medicine// 38, no. 2 (2013): 95-99. |6.38 (.99-40.81) |No |Positive |India |
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