{"id":"https://openalex.org/W142548162","doi":null,"title":"Growth discordancy in twin pregnancies: a risk factor not detected by measurements of biparietal diameter.","display_name":"Growth discordancy in twin pregnancies: a risk factor not detected by measurements of biparietal diameter.","publication_year":1985,"publication_date":"1985-08-01","ids":{"openalex":"https://openalex.org/W142548162","mag":"142548162","pmid":"https://pubmed.ncbi.nlm.nih.gov/3895071"},"language":"en","primary_location":{"id":"pmid:3895071","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/3895071","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Obstetrics and gynecology","raw_type":"Journal Article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5082448955","display_name":"R Erkkola","orcid":"https://orcid.org/0000-0002-2950-0856","observed_orcids":["https://orcid.org/0000-0002-2950-0856"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"R Erkkola","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005849742","display_name":"Sirpa Ala\u2010Mello","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"S Ala-Mello","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005744292","display_name":"OLLI PIIROINEN","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"O Piiroinen","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5109307800","display_name":"Pentti Kero","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"P Kero","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5069072697","display_name":"Matti L Sillanp\u00e4\u00e4","orcid":"https://orcid.org/0000-0003-4190-3698","observed_orcids":["https://orcid.org/0000-0003-4190-3698"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"M Sillanp\u00e4\u00e4","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":5.177,"has_fulltext":false,"cited_by_count":136,"citation_normalized_percentile":{"value":0.94872178,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":88,"max":98},"biblio":{"volume":"66","issue":"2","first_page":"203","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11732","display_name":"Assisted Reproductive Technology and Twin Pregnancy","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2735","display_name":"Pediatrics, Perinatology and Child Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T11732","display_name":"Assisted Reproductive Technology and Twin Pregnancy","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/2735","display_name":"Pediatrics, Perinatology and Child Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10290","display_name":"Pregnancy and preeclampsia studies","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/2729","display_name":"Obstetrics and Gynecology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11629","display_name":"Birth, Development, and Health","score":9.999999747378752e-05,"subfield":{"id":"https://openalex.org/subfields/2735","display_name":"Pediatrics, Perinatology and Child Health"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/twin-pregnancy","display_name":"twin pregnancy","score":0.949999988079071},{"id":"https://openalex.org/keywords/biparietal-diameter","display_name":"biparietal diameter","score":0.8619999885559082},{"id":"https://openalex.org/keywords/prenatal-ultrasound","display_name":"prenatal ultrasound","score":0.3659999966621399},{"id":"https://openalex.org/keywords/intrauterine-fetal-death","display_name":"intrauterine fetal death","score":0.777999997138977},{"id":"https://openalex.org/keywords/perinatal-death","display_name":"perinatal death","score":0.9200000166893005},{"id":"https://openalex.org/keywords/sensitivity-and-specificity","display_name":"sensitivity and specificity","score":0.8669999837875366}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9089623689651489},{"id":"https://openalex.org/C2908689992","wikidata":"https://www.wikidata.org/wiki/Q2642447","display_name":"Biparietal diameter","level":5,"score":0.8086674213409424},{"id":"https://openalex.org/C131872663","wikidata":"https://www.wikidata.org/wiki/Q5284418","display_name":"Obstetrics","level":1,"score":0.659944474697113},{"id":"https://openalex.org/C3018023364","wikidata":"https://www.wikidata.org/wiki/Q425265","display_name":"Significant difference","level":2,"score":0.5918179154396057},{"id":"https://openalex.org/C2909855057","wikidata":"https://www.wikidata.org/wiki/Q159979","display_name":"Twin Pregnancy","level":4,"score":0.5359955430030823},{"id":"https://openalex.org/C2992437641","wikidata":"https://www.wikidata.org/wiki/Q2781245","display_name":"Perinatal mortality","level":4,"score":0.5275083184242249},{"id":"https://openalex.org/C2779234561","wikidata":"https://www.wikidata.org/wiki/Q11995","display_name":"Pregnancy","level":2,"score":0.5243223905563354},{"id":"https://openalex.org/C2994573606","wikidata":"https://www.wikidata.org/wiki/Q2781245","display_name":"Fetal death","level":4,"score":0.4635894000530243},{"id":"https://openalex.org/C29456083","wikidata":"https://www.wikidata.org/wiki/Q1221899","display_name":"Gynecology","level":1,"score":0.3705590069293976},{"id":"https://openalex.org/C66322754","wikidata":"https://www.wikidata.org/wiki/Q4128476","display_name":"Birth weight","level":3,"score":0.36053499579429626},{"id":"https://openalex.org/C172680121","wikidata":"https://www.wikidata.org/wiki/Q26513","display_name":"Fetus","level":3,"score":0.33115267753601074},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.14122217893600464},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C3020057088","wikidata":"https://www.wikidata.org/wiki/Q3409626","display_name":"Head circumference","level":4,"score":0.0},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D001724","descriptor_name":"Birth Weight","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002508","descriptor_name":"Cephalometry","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D004200","descriptor_name":"Diseases in Twins","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005314","descriptor_name":"Embryonic and Fetal Development","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D005317","descriptor_name":"Fetal Growth Retardation","qualifier_ui":"Q000175","qualifier_name":"diagnosis","is_major_topic":true},{"descriptor_ui":"D005865","descriptor_name":"Gestational Age","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D007231","descriptor_name":"Infant, Newborn","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011247","descriptor_name":"Pregnancy","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011272","descriptor_name":"Pregnancy, Multiple","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D014463","descriptor_name":"Ultrasonography","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":2,"locations":[{"id":"pmid:3895071","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/3895071","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Obstetrics and gynecology","raw_type":"Journal Article"},{"id":"mag:142548162","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/3895071","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"PubMed","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","score":0.9391000270843506,"display_name":"Good health and well-being"}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2088802607","https://openalex.org/W2442699015","https://openalex.org/W2768266027","https://openalex.org/W2428742616","https://openalex.org/W3106994708","https://openalex.org/W3030382080","https://openalex.org/W2620342522","https://openalex.org/W2058014618","https://openalex.org/W2424330742","https://openalex.org/W2080987893"],"abstract_inverted_index":{"Among":[0,113],"460":[1],"twin":[2,115,196,224],"pregnancies":[3,116],"delivered":[4],"at":[5],"the":[6,33,36,44,56,62,65,86,98,106,109,168,175,181,207],"University":[7],"Central":[8],"Hospital":[9],"of":[10,24,35,68,131,161,163,202,211],"Turku":[11],"from":[12,32],"1970":[13],"to":[14,121,166,173,178,185,220],"1981,":[15],"there":[16,126],"were":[17,127],"41":[18],"(8.9%)":[19],"with":[20,64,88,97,105,108,133,144,153],"a":[21,134,145,154,191,216],"weight":[22,34,66,111],"difference":[23,67,92,100,138],"25%":[25,89],"or":[26,90,136,147,156],"more":[27,91,99,137,148,157],"between":[28],"twins":[29,132],"when":[30,95,103],"calculated":[31],"larger":[37],"twin.":[38,209],"The":[39,72,159],"perinatal":[40,57],"death":[41,58],"rate":[42,59],"in":[43,61,76,85,139,195],"first":[45],"group":[46,63,87,107],"(9.7%)":[47],"was":[48,78,171],"significantly":[49,79],"higher":[50],"(P":[51,81],"less":[52,69,82],"than":[53,55,70,83],".01)":[54],"(3.7%)":[60],"25%.":[71],"intrauterine":[73,203],"mortality":[74],"rate,":[75],"particular,":[77],"increased":[80],".001)":[84],"being":[93,101],"6.5-fold":[94,102],"compared":[96,104],"lower":[110],"difference.":[112,158],"271":[114],"examined":[117],"by":[118],"ultrasound":[119],"one":[120],"two":[122],"weeks":[123],"before":[124],"delivery,":[125],"31":[128],"(11.4%)":[129],"pairs":[130],"3-mm":[135],"biparietal":[140,164,212],"diameter,":[141],"11":[142],"(4.1%)":[143],"4-mm":[146],"difference,":[149],"and":[150,180],"seven":[151],"(2.6%)":[152],"5-mm":[155],"sensitivity":[160],"measurements":[162],"diameter":[165,213],"detect":[167,221],"growth":[169,193],"discordancy":[170],"9":[172],"35%,":[174],"specificity":[176],"90":[177],"98%,":[179],"positive":[182],"predictivity":[183],"23":[184],"29%.":[186],"This":[187],"study":[188],"indicates":[189],"that":[190],"divergent":[192],"pattern":[194],"pregnancy":[197],"carries":[198],"an":[199],"elevated":[200],"risk":[201],"death,":[204],"especially":[205],"for":[206],"smaller":[208],"Measurement":[210],"is":[214],"not":[215],"method":[217],"sensitive":[218],"enough":[219],"these":[222],"high-risk":[223],"pregnancies.":[225]},"counts_by_year":[{"year":2022,"cited_by_count":1},{"year":2019,"cited_by_count":4},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":5},{"year":2016,"cited_by_count":2},{"year":2015,"cited_by_count":4},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":5},{"year":2012,"cited_by_count":3}],"updated_date":"2026-11-03T10:50:19.383937","created_date":"2016-06-24T00:00:00"}