Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at-risk small-for-gestational-age infants: a retrospective cohort study

Please cite this paper as: Anderson N, Sadler L, Stewart A, McCowan LE. Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at‐risk small‐for‐gestational‐age infants: a retrospective cohort study. BJOG 2012;119:848–856. Objective To regenerat...

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Veröffentlicht in:	BJOG : an international journal of obstetrics and gynaecology 2012-06, Vol.119 (7), p.848-856
Hauptverfasser:	Anderson, NH, Sadler, LC, Stewart, AW, McCowan, LME
Format:	Artikel
Sprache:	eng
Schlagworte:	Babies Biological and medical sciences Birth Weight Birthweight Cohort Studies customised centiles Diseases of mother, fetus and pregnancy Female fetal growth restriction Fetal Weight Gynecology. Andrology. Obstetrics Humans Infant, Newborn Infant, Small for Gestational Age intrauterine growth restriction Linear Models Male Medical sciences Medical statistics Models, Biological Mortality New Zealand Pathology perinatal morbidity Perinatal Mortality Pregnancy Pregnancy Complications Pregnancy. Fetus. Placenta Reference Standards Retrospective Studies Risk Risk factors Sex Distribution small for gestational age Ultrasonography, Prenatal
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creator	Anderson, NH Sadler, LC Stewart, AW McCowan, LME
description	Please cite this paper as: Anderson N, Sadler L, Stewart A, McCowan LE. Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at‐risk small‐for‐gestational‐age infants: a retrospective cohort study. BJOG 2012;119:848–856. Objective To regenerate coefficients for the New Zealand customised birthweight centile calculator using an updated birth cohort, and compare the identification of at‐risk small‐for‐gestational‐age (SGA) infants between full customisation (including maternal characteristics) and an ultrasound‐based fetal weight and infant gender partial customisation. Design Retrospective cohort study of prospectively collected maternity data. Setting National Women’s Health Auckland, New Zealand. Population Singleton pregnancies in the period 2006–2009; n = 24 176. Methods Multiple linear regression analysis was performed for full customisation (adjusted for gestation, infant gender, maternal characteristics and pathological variables) and ultrasound‐and‐gender customisation (adjusted for gestation and infant gender). Main outcome measures Risks of SGA‐related perinatal death were compared between models. Results Changes occurred in some ethnicity coefficients, including Chinese (−135 g), Tongan (−101 g) and Samoan (−89 g), and ten ethnicities were added. Overall, full customisation identified SGA infants with higher odds of perinatal death (OR 5.6, 95% CI 3.6–8.7) than infants classed as SGA by ultrasound‐and‐gender customisation (OR 2.1, 95% CI 1.4–3.3) (P = 0.02). In subgroup analyses, infants classed as SGA by full but not ultrasound‐and‐gender customisation (n = 888, 3.4%) had an increased risk of perinatal death (RR 4.7, 95% CI 2.7–7.9); however, those identified as SGA by ultrasound‐and‐gender customisation alone were not at an increased risk (n = 676, 2.6%, RR 1.1, 95% CI 0.4–3.6). The population attributable risk (PAR) of SGA‐related perinatal death was higher for full (49.8%) than for ultrasound‐and‐gender (43.0%) customisation. Conclusions Updating the New Zealand customised birthweight centile calculator resulted in revised coefficients that better reflect a contemporary birth cohort. Inclusion of maternal characteristics in a birthweight customisation model increases the detection of SGA infants at risk of perinatal death.
doi_str_mv	10.1111/j.1471-0528.2012.03313.x
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Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at‐risk small‐for‐gestational‐age infants: a retrospective cohort study. BJOG 2012;119:848–856. Objective To regenerate coefficients for the New Zealand customised birthweight centile calculator using an updated birth cohort, and compare the identification of at‐risk small‐for‐gestational‐age (SGA) infants between full customisation (including maternal characteristics) and an ultrasound‐based fetal weight and infant gender partial customisation. Design Retrospective cohort study of prospectively collected maternity data. Setting National Women’s Health Auckland, New Zealand. Population Singleton pregnancies in the period 2006–2009; n = 24 176. Methods Multiple linear regression analysis was performed for full customisation (adjusted for gestation, infant gender, maternal characteristics and pathological variables) and ultrasound‐and‐gender customisation (adjusted for gestation and infant gender). Main outcome measures Risks of SGA‐related perinatal death were compared between models. Results Changes occurred in some ethnicity coefficients, including Chinese (−135 g), Tongan (−101 g) and Samoan (−89 g), and ten ethnicities were added. Overall, full customisation identified SGA infants with higher odds of perinatal death (OR 5.6, 95% CI 3.6–8.7) than infants classed as SGA by ultrasound‐and‐gender customisation (OR 2.1, 95% CI 1.4–3.3) (P = 0.02). In subgroup analyses, infants classed as SGA by full but not ultrasound‐and‐gender customisation (n = 888, 3.4%) had an increased risk of perinatal death (RR 4.7, 95% CI 2.7–7.9); however, those identified as SGA by ultrasound‐and‐gender customisation alone were not at an increased risk (n = 676, 2.6%, RR 1.1, 95% CI 0.4–3.6). The population attributable risk (PAR) of SGA‐related perinatal death was higher for full (49.8%) than for ultrasound‐and‐gender (43.0%) customisation. Conclusions Updating the New Zealand customised birthweight centile calculator resulted in revised coefficients that better reflect a contemporary birth cohort. Inclusion of maternal characteristics in a birthweight customisation model increases the detection of SGA infants at risk of perinatal death.</description><identifier>ISSN: 1470-0328</identifier><identifier>EISSN: 1471-0528</identifier><identifier>DOI: 10.1111/j.1471-0528.2012.03313.x</identifier><identifier>PMID: 22469096</identifier><identifier>CODEN: BIOGFQ</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Publishing Ltd</publisher><subject>Babies ; Biological and medical sciences ; Birth Weight ; Birthweight ; Cohort Studies ; customised centiles ; Diseases of mother, fetus and pregnancy ; Female ; fetal growth restriction ; Fetal Weight ; Gynecology. Andrology. Obstetrics ; Humans ; Infant, Newborn ; Infant, Small for Gestational Age ; intrauterine growth restriction ; Linear Models ; Male ; Medical sciences ; Medical statistics ; Models, Biological ; Mortality ; New Zealand ; Pathology ; perinatal morbidity ; Perinatal Mortality ; Pregnancy ; Pregnancy Complications ; Pregnancy. Fetus. Placenta ; Reference Standards ; Retrospective Studies ; Risk ; Risk factors ; Sex Distribution ; small for gestational age ; Ultrasonography, Prenatal</subject><ispartof>BJOG : an international journal of obstetrics and gynaecology, 2012-06, Vol.119 (7), p.848-856</ispartof><rights>2012 The Authors BJOG An International Journal of Obstetrics and Gynaecology © 2012 RCOG</rights><rights>2015 INIST-CNRS</rights><rights>2012 The Authors BJOG An International Journal of Obstetrics and Gynaecology © 2012 RCOG.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4653-7df58f0fc4d60844876111fb5b4c155d370f6b7709495ed1085efecbd7627ba3</citedby><cites>FETCH-LOGICAL-c4653-7df58f0fc4d60844876111fb5b4c155d370f6b7709495ed1085efecbd7627ba3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fj.1471-0528.2012.03313.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fj.1471-0528.2012.03313.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27903,27904,45553,45554</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25877557$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22469096$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Anderson, NH</creatorcontrib><creatorcontrib>Sadler, LC</creatorcontrib><creatorcontrib>Stewart, AW</creatorcontrib><creatorcontrib>McCowan, LME</creatorcontrib><title>Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at-risk small-for-gestational-age infants: a retrospective cohort study</title><title>BJOG : an international journal of obstetrics and gynaecology</title><addtitle>BJOG</addtitle><description>Please cite this paper as: Anderson N, Sadler L, Stewart A, McCowan LE. Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at‐risk small‐for‐gestational‐age infants: a retrospective cohort study. BJOG 2012;119:848–856. Objective To regenerate coefficients for the New Zealand customised birthweight centile calculator using an updated birth cohort, and compare the identification of at‐risk small‐for‐gestational‐age (SGA) infants between full customisation (including maternal characteristics) and an ultrasound‐based fetal weight and infant gender partial customisation. Design Retrospective cohort study of prospectively collected maternity data. Setting National Women’s Health Auckland, New Zealand. Population Singleton pregnancies in the period 2006–2009; n = 24 176. Methods Multiple linear regression analysis was performed for full customisation (adjusted for gestation, infant gender, maternal characteristics and pathological variables) and ultrasound‐and‐gender customisation (adjusted for gestation and infant gender). Main outcome measures Risks of SGA‐related perinatal death were compared between models. Results Changes occurred in some ethnicity coefficients, including Chinese (−135 g), Tongan (−101 g) and Samoan (−89 g), and ten ethnicities were added. Overall, full customisation identified SGA infants with higher odds of perinatal death (OR 5.6, 95% CI 3.6–8.7) than infants classed as SGA by ultrasound‐and‐gender customisation (OR 2.1, 95% CI 1.4–3.3) (P = 0.02). In subgroup analyses, infants classed as SGA by full but not ultrasound‐and‐gender customisation (n = 888, 3.4%) had an increased risk of perinatal death (RR 4.7, 95% CI 2.7–7.9); however, those identified as SGA by ultrasound‐and‐gender customisation alone were not at an increased risk (n = 676, 2.6%, RR 1.1, 95% CI 0.4–3.6). The population attributable risk (PAR) of SGA‐related perinatal death was higher for full (49.8%) than for ultrasound‐and‐gender (43.0%) customisation. Conclusions Updating the New Zealand customised birthweight centile calculator resulted in revised coefficients that better reflect a contemporary birth cohort. Inclusion of maternal characteristics in a birthweight customisation model increases the detection of SGA infants at risk of perinatal death.</description><subject>Babies</subject><subject>Biological and medical sciences</subject><subject>Birth Weight</subject><subject>Birthweight</subject><subject>Cohort Studies</subject><subject>customised centiles</subject><subject>Diseases of mother, fetus and pregnancy</subject><subject>Female</subject><subject>fetal growth restriction</subject><subject>Fetal Weight</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>Humans</subject><subject>Infant, Newborn</subject><subject>Infant, Small for Gestational Age</subject><subject>intrauterine growth restriction</subject><subject>Linear Models</subject><subject>Male</subject><subject>Medical sciences</subject><subject>Medical statistics</subject><subject>Models, Biological</subject><subject>Mortality</subject><subject>New Zealand</subject><subject>Pathology</subject><subject>perinatal morbidity</subject><subject>Perinatal Mortality</subject><subject>Pregnancy</subject><subject>Pregnancy Complications</subject><subject>Pregnancy. Fetus. Placenta</subject><subject>Reference Standards</subject><subject>Retrospective Studies</subject><subject>Risk</subject><subject>Risk factors</subject><subject>Sex Distribution</subject><subject>small for gestational age</subject><subject>Ultrasonography, Prenatal</subject><issn>1470-0328</issn><issn>1471-0528</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkt-O1CAYxRujcdfVVzAkxsSbViildEy80FFHzep6sYnGG0IpdJjtlArUnXkvH9CvnXFMvJIb_v3OAb5DkiCCMwLt-SYjBScpZnmV5ZjkGaaU0Gx3Jzk_bdydxzjFNK_OkgchbDAmZY7p_eQsz4tygRflefLrk4za97JDsm_QIOPada61ChYGr9te9mqP1Fp6qYCzIVoVkO2RGkN0Wxt0g2rr4_pW23YdkdJ9tJ0Os5ttppkBs2hdj5xBMqbgcYPCVnZdapxPWx3ivC27VLYarI3sY3iBJPI6ehcGraL9qZFya-cjCnFs9g-Te0Z2QT869hfJ9bu318v36eXV6sPy1WWqipLRlDeGVQYbVTQlroqi4iUUz9SsLhRhrKEcm7LmHC-KBdMNwRXTRqu64WXOa0kvkmcH28G7HyNcVMCDle462Ws3BkGg8hzKTRigT_5BN26cyjpTpKK0oCVQ1YFS8LDgtRGDt1vp9wCJKVixEVN-YspPTMGKOVixA-nj4wFjvdXNSfgnSQCeHgEZID3jITkb_nKs4pwxDtzLA3cLOe3_-wLi9ceraQT69KCHv6B3J730N6LklDPx9fNKfMvx8s2X_LtY0d8B6NGw</recordid><startdate>201206</startdate><enddate>201206</enddate><creator>Anderson, NH</creator><creator>Sadler, LC</creator><creator>Stewart, AW</creator><creator>McCowan, LME</creator><general>Blackwell Publishing Ltd</general><general>Blackwell</general><general>Wiley Subscription Services, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QP</scope><scope>ASE</scope><scope>FPQ</scope><scope>K6X</scope><scope>K9.</scope><scope>7X8</scope></search><sort><creationdate>201206</creationdate><title>Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at-risk small-for-gestational-age infants: a retrospective cohort study</title><author>Anderson, NH ; Sadler, LC ; Stewart, AW ; McCowan, LME</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4653-7df58f0fc4d60844876111fb5b4c155d370f6b7709495ed1085efecbd7627ba3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Babies</topic><topic>Biological and medical sciences</topic><topic>Birth Weight</topic><topic>Birthweight</topic><topic>Cohort Studies</topic><topic>customised centiles</topic><topic>Diseases of mother, fetus and pregnancy</topic><topic>Female</topic><topic>fetal growth restriction</topic><topic>Fetal Weight</topic><topic>Gynecology. Andrology. Obstetrics</topic><topic>Humans</topic><topic>Infant, Newborn</topic><topic>Infant, Small for Gestational Age</topic><topic>intrauterine growth restriction</topic><topic>Linear Models</topic><topic>Male</topic><topic>Medical sciences</topic><topic>Medical statistics</topic><topic>Models, Biological</topic><topic>Mortality</topic><topic>New Zealand</topic><topic>Pathology</topic><topic>perinatal morbidity</topic><topic>Perinatal Mortality</topic><topic>Pregnancy</topic><topic>Pregnancy Complications</topic><topic>Pregnancy. Fetus. Placenta</topic><topic>Reference Standards</topic><topic>Retrospective Studies</topic><topic>Risk</topic><topic>Risk factors</topic><topic>Sex Distribution</topic><topic>small for gestational age</topic><topic>Ultrasonography, Prenatal</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Anderson, NH</creatorcontrib><creatorcontrib>Sadler, LC</creatorcontrib><creatorcontrib>Stewart, AW</creatorcontrib><creatorcontrib>McCowan, LME</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>British Nursing Index</collection><collection>British Nursing Index (BNI) (1985 to Present)</collection><collection>British Nursing Index</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>MEDLINE - Academic</collection><jtitle>BJOG : an international journal of obstetrics and gynaecology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Anderson, NH</au><au>Sadler, LC</au><au>Stewart, AW</au><au>McCowan, LME</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at-risk small-for-gestational-age infants: a retrospective cohort study</atitle><jtitle>BJOG : an international journal of obstetrics and gynaecology</jtitle><addtitle>BJOG</addtitle><date>2012-06</date><risdate>2012</risdate><volume>119</volume><issue>7</issue><spage>848</spage><epage>856</epage><pages>848-856</pages><issn>1470-0328</issn><eissn>1471-0528</eissn><coden>BIOGFQ</coden><abstract>Please cite this paper as: Anderson N, Sadler L, Stewart A, McCowan LE. Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at‐risk small‐for‐gestational‐age infants: a retrospective cohort study. BJOG 2012;119:848–856. Objective To regenerate coefficients for the New Zealand customised birthweight centile calculator using an updated birth cohort, and compare the identification of at‐risk small‐for‐gestational‐age (SGA) infants between full customisation (including maternal characteristics) and an ultrasound‐based fetal weight and infant gender partial customisation. Design Retrospective cohort study of prospectively collected maternity data. Setting National Women’s Health Auckland, New Zealand. Population Singleton pregnancies in the period 2006–2009; n = 24 176. Methods Multiple linear regression analysis was performed for full customisation (adjusted for gestation, infant gender, maternal characteristics and pathological variables) and ultrasound‐and‐gender customisation (adjusted for gestation and infant gender). Main outcome measures Risks of SGA‐related perinatal death were compared between models. Results Changes occurred in some ethnicity coefficients, including Chinese (−135 g), Tongan (−101 g) and Samoan (−89 g), and ten ethnicities were added. Overall, full customisation identified SGA infants with higher odds of perinatal death (OR 5.6, 95% CI 3.6–8.7) than infants classed as SGA by ultrasound‐and‐gender customisation (OR 2.1, 95% CI 1.4–3.3) (P = 0.02). In subgroup analyses, infants classed as SGA by full but not ultrasound‐and‐gender customisation (n = 888, 3.4%) had an increased risk of perinatal death (RR 4.7, 95% CI 2.7–7.9); however, those identified as SGA by ultrasound‐and‐gender customisation alone were not at an increased risk (n = 676, 2.6%, RR 1.1, 95% CI 0.4–3.6). The population attributable risk (PAR) of SGA‐related perinatal death was higher for full (49.8%) than for ultrasound‐and‐gender (43.0%) customisation. Conclusions Updating the New Zealand customised birthweight centile calculator resulted in revised coefficients that better reflect a contemporary birth cohort. Inclusion of maternal characteristics in a birthweight customisation model increases the detection of SGA infants at risk of perinatal death.</abstract><cop>Oxford, UK</cop><pub>Blackwell Publishing Ltd</pub><pmid>22469096</pmid><doi>10.1111/j.1471-0528.2012.03313.x</doi><tpages>9</tpages></addata></record>
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subjects	Babies Biological and medical sciences Birth Weight Birthweight Cohort Studies customised centiles Diseases of mother, fetus and pregnancy Female fetal growth restriction Fetal Weight Gynecology. Andrology. Obstetrics Humans Infant, Newborn Infant, Small for Gestational Age intrauterine growth restriction Linear Models Male Medical sciences Medical statistics Models, Biological Mortality New Zealand Pathology perinatal morbidity Perinatal Mortality Pregnancy Pregnancy Complications Pregnancy. Fetus. Placenta Reference Standards Retrospective Studies Risk Risk factors Sex Distribution small for gestational age Ultrasonography, Prenatal
title	Maternal and pathological pregnancy characteristics in customised birthweight centiles and identification of at-risk small-for-gestational-age infants: a retrospective cohort study
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