caa a22 4500 477128823 CHVBK 20180405111657.0 cr unu---uuuuu 170330e19971101xx s 000 0 eng 10.1023/A:1018408211089 doi (NATIONALLICENCE)springer-10.1023/A:1018408211089 Induced and spontaneous abortion in relation to risk of breast cancer (United States) [Elektronische Daten] [Julie Palmer, Lynn Rosenberg, R. Rao, Ann Zauber, Brian Strom, M. Warshauer, Paul Stolley, Samuel Shapiro] The relation of induced and spontaneous abortion to the risk of breast cancer is evaluated in a hospital-based case-control interview study conducted in three cities in the United States from 1985 through 1995. Cases were 1,803 women aged 25 to 64 years with newly diagnosed invasive breast cancer; controls were 4,182 women of the same ages admitted for conditions unrelated to reproductive factors. Other breast cancer risk-factors were controlled through multiple logistic regression. The reference for allanalyses was women who had never had an abortion, either induced or spontaneous. Among parous women, the relative risk (RR) estimate was 1.1 (95percent confidence interval [CI] = 0.9-1.5) for induced abortion overall, 1.0(CI = 0.7-1.4) for abortion before the first birth, and 1.3 (CI = 1.0-1.8)for abortion after at least one birth. Among nulliparous women, the relative risk estimate for induced abortion was 1.3 (CI = 0.9-1.9). There was no trend of increased risk with number of abortions, nor was there consistent evidence of an increased risk in any particular subgroup. Spontaneous abortion was not associated with increased risk of breast cancer, either among nulliparous women or among parous women. These findings provide little support for the hypothesis that induced abortion increases breast cancer risk overall or in particular subgroups. Chapman and Hall, 1997 Abortion nationallicence breast carcinoma nationallicence risk factors nationallicence United States nationallicence women nationallicence Palmer Julie Slone Epidemiology Unit, School of Public Health, Boston University of Medicine, Brookline, USA aut Rosenberg Lynn Slone Epidemiology Unit, School of Public Health, Boston University of Medicine, Brookline, USA aut Rao R. Slone Epidemiology Unit, School of Public Health, Boston University of Medicine, Brookline, USA aut Zauber Ann Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, USA aut Strom Brian Center for Clinical Epidemiology and Biostatistics, Department of Biostatistics and Epidemiology, and Division of General Internal Medicine of the Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, USA aut Warshauer M. Department of Public Health, Cornell Medical Center, New York Hospital, New York, USA aut Stolley Paul Department of Epidemiology and Preventive Medicine, University of Maryland School of Medicine, Baltimore, USA aut Shapiro Samuel Slone Epidemiology Unit, School of Public Health, Boston University of Medicine, Brookline, USA aut Cancer Causes & Control Kluwer Academic Publishers 8/6(1997-11-01), 841-849 0957-5243 8:6<841 1997 8 10552 https://doi.org/10.1023/A:1018408211089 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1018408211089 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Palmer Julie Slone Epidemiology Unit, School of Public Health, Boston University of Medicine, Brookline, USA aut NATIONALLICENCE 700 1- Rosenberg Lynn Slone Epidemiology Unit, School of Public Health, Boston University of Medicine, Brookline, USA aut NATIONALLICENCE 700 1- Rao R. Slone Epidemiology Unit, School of Public Health, Boston University of Medicine, Brookline, USA aut NATIONALLICENCE 700 1- Zauber Ann Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, USA aut NATIONALLICENCE 700 1- Strom Brian Center for Clinical Epidemiology and Biostatistics, Department of Biostatistics and Epidemiology, and Division of General Internal Medicine of the Department of Medicine, University of Pennsylvania School of Medicine, Philadelphia, USA aut NATIONALLICENCE 700 1- Warshauer M. Department of Public Health, Cornell Medical Center, New York Hospital, New York, USA aut NATIONALLICENCE 700 1- Stolley Paul Department of Epidemiology and Preventive Medicine, University of Maryland School of Medicine, Baltimore, USA aut NATIONALLICENCE 700 1- Shapiro Samuel Slone Epidemiology Unit, School of Public Health, Boston University of Medicine, Brookline, USA aut NATIONALLICENCE 773 0- Cancer Causes & Control Kluwer Academic Publishers 8/6(1997-11-01), 841-849 0957-5243 8:6<841 1997 8 10552 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer