An International Contrast of Rates of Placental Abruption: An Age-Period-Cohort Analysis

• Cande V. Ananth ,

  * E-mail: cande.ananth@columbia.edu

  Affiliations Department of Obstetrics and Gynecology, College of Physicians and Surgeons, Columbia University, New York, New York, United States of America, Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, United States of America

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• Katherine M. Keyes,

  Affiliation Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, United States of America

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• Ava Hamilton,

  Affiliation Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, New York, United States of America

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• Mika Gissler,

  Affiliation THL National Institute for Health and Welfare, Helsinki, Finland and NHV Nordic School of Public Health, Gothenburg, Sweden

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• Chunsen Wu,

  Affiliation Section for Epidemiology, Department of Public Health, Aarhus University, Aarhus, Denmark

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• Shiliang Liu,

  Affiliation Health Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, Canada

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• Miguel Angel Luque-Fernandez,

  Affiliation Department of Epidemiology, School of Public Health, Harvard University, Boston, Massachusetts, United States of America

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• Rolv Skjærven,

  Affiliations Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway, Medical Birth Registry of Norway, Norwegian Institute of Public Health, Bergen, Norway

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• Michelle A. Williams,

  Affiliation Department of Epidemiology, School of Public Health, Harvard University, Boston, Massachusetts, United States of America

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• Minna Tikkanen,

  Affiliation Department of Obstetrics and Gynecology, University Central Hospital, Helsinki, Finland

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• Sven Cnattingius

  Affiliation Clinical Epidemiology Unit, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden

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