Australia's Mothers and Babies 2001
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PERINATAL STATISTICS SERIES Number 13 Australia’s mothers and babies 2001 Paula J Laws Elizabeth A Sullivan September 2004 AIHW National Perinatal Statistics Unit Sydney AIHW cat. no. PER 25 © Australian Institute of Health and Welfare 2004 This work is copyright. Apart from any use as permitted under the Copyright Act 1968, no part may be reproduced without prior written permission from the Australian Institute of Health and Welfare. Requests and enquiries concerning reproduction and rights should be directed to the Head, Media and Publishing, Australian Institute of Health and Welfare, GPO Box 570, Canberra ACT 2601. This publication is part of the AIHW National Perinatal Statistics Unit’s Perinatal Statistics Series. A complete list of the Unit’s publications is available from the Publications Unit, Australian Institute of Health and Welfare, GPO Box 570, Canberra ACT 2601, or via the Institute’s web site (http://www.aihw.gov.au). ISSN 1321-8336 ISBN 1 74024 403 6 Suggested citation Laws PJ & Sullivan EA 2004. Australia’s mothers and babies 2001. AIHW Cat. No. PER 25. Sydney: AIHW National Perinatal Statistics Unit (Perinatal Statistics Series No. 13). Australian Institute of Health and Welfare Chair Hon. Peter Collins, AM, QC Director Dr Richard Madden Published by the Australian Institute of Health and Welfare Printed by Pirion Pty Ltd Contents List of tables ......................................................................................................................................... v List of figures .....................................................................................................................................vii Preface................................................................................................................................................ viii Acknowledgments.............................................................................................................................. ix Highlights ..............................................................................................................................................x 1 Introduction ...................................................................................................................................1 Purpose of this report....................................................................................................................1 Structure of this report..................................................................................................................1 The Perinatal National Minimum Data Set................................................................................2 The National Perinatal Data Development Committee ...........................................................3 Data sources....................................................................................................................................3 Criteria for inclusion in perinatal data collection......................................................................6 Data quality ....................................................................................................................................7 Data presentation...........................................................................................................................7 2 Summary measures of perinatal health....................................................................................9 3 Mothers.........................................................................................................................................10 Confinements and births ............................................................................................................10 Place of birth.................................................................................................................................11 Maternal age.................................................................................................................................12 Maternal parity ............................................................................................................................14 Smoking during pregnancy........................................................................................................16 Indigenous status.........................................................................................................................17 Maternal country of birth ...........................................................................................................19 Hospital sector..............................................................................................................................21 Duration of pregnancy................................................................................................................22 Multiple pregnancy .....................................................................................................................24 Onset of labour.............................................................................................................................25 Presentation at birth ....................................................................................................................27 Method of birth ............................................................................................................................28 Perineal status after vaginal delivery........................................................................................35 iii Mother’s length of stay in hospital............................................................................................36 Mother’s mode of separation from hospital ............................................................................38 Terminations.................................................................................................................................39 Drug and alcohol use during pregnancy..................................................................................40 Maternal mortality.......................................................................................................................41 4 Babies............................................................................................................................................42 Baby’s birth status........................................................................................................................42 Baby’s sex......................................................................................................................................43 Gestational age.............................................................................................................................44 Birthweight ...................................................................................................................................46 Apgar scores .................................................................................................................................50 Baby’s length of stay in hospital of birth..................................................................................51 Baby’s mode of separation from hospital.................................................................................53 5 Special topic: Confinements and births of twins .................................................................54 6 Special topic: Assisted reproductive technology births ......................................................58 7 Babies in level III neonatal intensive care units...................................................................61 8 Perinatal mortality......................................................................................................................64 Definitions.....................................................................................................................................64 Issues .............................................................................................................................................65 ABS data........................................................................................................................................66 National Perinatal Data Collection data...................................................................................68 Appendix A: Current Perinatal National Minimum Data Set items ........................................72 Appendix B: State and territory perinatal reports........................................................................73 Appendix C: Data collection contacts.............................................................................................74 Abbreviations......................................................................................................................................78 Glossary................................................................................................................................................80 References............................................................................................................................................83 iv List of tables Table 2.1: Summary measures of perinatal health for Australia, National Perinatal Data Collection, 2001 .................................................................................................................9 Table 3.1: Confinements and births by state and territory, 2001 ...............................................10 Table