Actions have consequences.
There have been studies done in the West on a positive correlation between abortion and breast cancer. Now, a new Chinese study is confirming the abortion-breast cancer link.
First, a crash course on statistics and scientific studies!
- The word “correlation” means association — that two variables are associated together. While a correlation is not causation, a constantly recurrent association is strongly suggestive of a cause-effect relationship.
- The word “positive” refers to the relationship between two variables: they both increase or both decrease in intensity. A “negative” correlation means the two variables travel in opposite direction, that is, as one increases, the other decreases. In this case, a positive correlation means that as the number of abortions a woman has had increases, the likelihood of getting breast cancer also increases.
- Additionally, when scientists find a correlation, the results typically are tested for their “statistical significance“ or “level of significance — which is an effort to determine if the results could have happened by pure chance alone. Popular levels of significance are 10% (0.1), 5% (0.05), 1% (0.01), 0.5% (0.005), and 0.1% (0.001). Choosing level of significance is a somewhat arbitrary task, but for many applications, a level of 5% is chosen. The most demanding standard of statistical significance is the 0.01 interval. This means that the probability for the test result happening by pure chance is only 1 out of 1,000. That, in turn, confers “significance” or credibility on the test result.
- Lastly, an important principle in science is verifiability or replicability. A test should be repeated by other scientists who can confirm the alleged results. The more the test is replicated and the same results are obtained, the more confident we have that an alleged relationship indeed is true.
Calvin Freiburger reports for LifeSiteNews, May 16, 2012, that the international Coalition on Abortion/Breast Cancer announced Tuesday that a new Chinese study finds a “very statistically significant” “dose-response relationship” between breast cancer and the number of induced abortions a woman has undergone — which means the risk of breast cancer increases with every abortion.
The study was led by Ai-Ren Jiang and published in the February 2012 issue of Asian Pacific Journal of Cancer Prevention.
Researchers found that the difference for most premenopausal women with a previous induced abortion was a statistically insignificant 16% increased risk of contracting breast cancer. But those who had three or more abortions fared much worse with a 1.55-fold risk elevation.
However, postmenopausal women with a previous induced abortion showed significantly greater risk of breast cancer: one abortion increased a patient’s risk by a statistically significant 1.79, two increased it by a statistically significant 1.85, and three or more were linked to a non-statistically significant 2.14-fold elevated risk.
The Coalition on Abortion/Breast Cancer notes that multiple past Chinese studies have shown similar results, including a 1995 study conducted by L. Bu and published in the American Journal of Epidemiology, which linked abortion to a statistically significant 4.5-fold increased risk to contract breast cancer at or before age 35.
As troubling as the numbers are, Professor Joel Brind of Baruch College believes that Chinese studies may actually understate the link, since China’s one-child policy means most abortions take place after women have given birth once, and a woman’s first full-term pregnancy reduces the risk of breast cancer by maturing 85% of her cancer-susceptible breast lobules into cancer-resistant lobules. Brind believes the risk would likely be higher among women who abort without previously carrying a pregnancy to term.
“A place like China is good to measure the dose effect of abortion, and the statistics are strong enough to show a highly significant trend, which strengthens a causal inference,” Brind said.
According to the Coalition on Abortion/Breast Cancer’s count, worldwide 53 out of 69 epidemiological studies dating back to 1957 found increased risk for breast cancer among post-abortive women.
- The more abortions a woman’s had, the greater the risk that she’ll get breast cancer.
- The risk increases as a woman ages: While having “just” one abortion doesn’t significantly increase a woman’s chances to get breast cancer when she’s young, it catches up with her when she reaches her post-menopausal years.
- Having had at least one child has a protective effect on a woman’s health. (Read more about that HERE.)
- These test findings have been confirmed again and again.