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studies_on_the_abortion-breast_cancer_link [2015/09/10 14:22]
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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 Paper//: [[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. 
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-The numerical risks associated with induced abortion (and its related circumstances,​ which vary by study) are listed for each study below. The 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 ^