The prevalence of maternal medical conditions during pregnancy and a validation of their reporting in hospital discharge data

Authors

  • Ruth M. HADFIELD,

    1. 1Perinatal Research, The Kolling Institute of Medical Research, University of Sydney, Sydney, New South Wales, and
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  • Samantha J. LAIN,

    1. 1Perinatal Research, The Kolling Institute of Medical Research, University of Sydney, Sydney, New South Wales, and
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  • Carolyn A. CAMERON,

    1. 1Perinatal Research, The Kolling Institute of Medical Research, University of Sydney, Sydney, New South Wales, and
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  • Jane C. BELL,

    1. 1Perinatal Research, The Kolling Institute of Medical Research, University of Sydney, Sydney, New South Wales, and
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  • Jonathan M. MORRIS,

    1. 1Perinatal Research, The Kolling Institute of Medical Research, University of Sydney, Sydney, New South Wales, and
    2. 2Department of Obstetrics and Gynaecology, Northern Clinical School at Royal North Shore Hospital, University of Sydney, Sydney, New South Wales, Australia
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  • Christine L. ROBERTS

    1. 1Perinatal Research, The Kolling Institute of Medical Research, University of Sydney, Sydney, New South Wales, and
    2. 2Department of Obstetrics and Gynaecology, Northern Clinical School at Royal North Shore Hospital, University of Sydney, Sydney, New South Wales, Australia
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: Dr Ruth M. Hadfield, Perinatal Research, The Kolling Institute of Medical Research, University of Sydney, E25, NSW 2006, Australia. Email: rhadfield@med.usyd.edu.au

Abstract

Population health datasets are a valuable resource for studying maternal and obstetric health outcomes. However, their validity has not been thoroughly examined. We compared medical records from a random selection of New South Wales (NSW) women who gave birth in a NSW hospital in 2002 with coded hospital discharge records. We estimated the population prevalence of maternal medical conditions during pregnancy and found a tendency towards underreporting although specificities were high, indicating that false positives were uncommon.

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