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The article presents a study to examine associations between oral contraceptives (OC) use prior to breast cancer diagnosis and survival. The study tracked 4,565 women with invasive breast cancer participating in the Women's Contraceptive and Reproductive Experiences (CARE) Study and 3,929 from the California Teachers Study (CTS) cohort for vital status. A total of 1,064 died in the CARE study and 523 in the CTS study. Findings from the two independent studies show no overall association between OC use and survival among women with breast cancer.

The article highlights the risk of breast cancer associated with body mass index in White and African-American Women. Women's Contraceptive and Reproductive Experiences Study data was used in the study, which involved 3,997 white and African-American breast cancer patients who were diagnosed between 1994 and 1998 and 4,041 35-64 years old control participants. The authors conclude that body mass index at 18 years old of women aged 35 to 64 years is inversely associated with breast cancer risk but it can be affected by menopause status, race and hormone.

The article presents a study which compares the results of estrogen receptor (ER) and progesterone receptor (PR) status obtained from a centralized pathology laboratory and two Surveillance, Epidemiology and End Results (SEER) registries. It states that the agreement between the result from centralized laboratory and SEER registry has a significant role on the status of ER and PR. Results show that conclusions based on the data of SEER registry are reliable for two major breast cancer subtypes.

The article presents a study which evaluates the association between the history of migraine and the risk of breast cancer through the use of unconditional logistic regression. It shows that the risk is having no difference with the menopausal status, migraine diagnosis and the prescribed migraine medications use. Accordingly, its data support a previous conclusion saying that migraine's history can be accompanied by a reduced risk of breast cancer.

The article presents a study which examines the prognostic influence of reproductive factors on survival following a diagnosis of ovarian cancer. It shows that the risk of death was higher among those women having the highest number of lifetime ovulatory cycles (LOC) compared with those having fewest LOC. It is found that decreased survival following ovarian cancer usually associate the high LOC and early age at menarche.

The article examines whether age at first birth and breastfeeding modify the long-term effect of parity on risk of estrogen receptor-progesterone receptor (ERPR)-positive and ERPR-negative breast cancer using multivariable logistic regression analysis. According to the authors, women who gave birth before age 25 years had a 36% reduced risk compared with nulligravida. They add that additional births and among women who breastfed reduced the risk of ERPR-positive cancers.