{"id":"https://openalex.org/W2468753138","doi":"https://doi.org/10.1136/jech-2015-206302","title":"Twinning and major birth defects, National Birth Defects Prevention Study, 1997\u20132007","display_name":"Twinning and major birth defects, National Birth Defects Prevention Study, 1997\u20132007","publication_year":2016,"publication_date":"2016-06-20","ids":{"openalex":"https://openalex.org/W2468753138","doi":"https://doi.org/10.1136/jech-2015-206302","mag":"2468753138","pmid":"https://pubmed.ncbi.nlm.nih.gov/27325867","pmcid":"https://www.ncbi.nlm.nih.gov/pmc/articles/5299593"},"language":"en","primary_location":{"id":"doi:10.1136/jech-2015-206302","doi":"https://doi.org/10.1136/jech-2015-206302","is_oa":false,"landing_page_url":"https://doi.org/10.1136/jech-2015-206302","pdf_url":null,"source":{"id":"https://openalex.org/S156988948","display_name":"Journal of Epidemiology & Community Health","issn_l":"0141-7681","issn":["0141-7681","0142-467X","0143-005X","1470-2738"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","doyens","erih-plus","jufo-3","ki-jl-2","medline","norway-2","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310319945","host_organization_name":"BMJ","host_organization_lineage":["https://openalex.org/P4310319945"],"host_organization_lineage_names":["BMJ"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Epidemiology and Community Health","raw_type":"journal-article"},"volume":null,"type":"article","indexed_in":["crossref","pubmed"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/5299593","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5102236196","display_name":"April L. Dawson","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1289490764","display_name":"Centers for Disease Control and Prevention","ror":"https://ror.org/042twtr12","country_code":"US","type":"government","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934"]},{"id":"https://openalex.org/I4210109585","display_name":"National Center on Birth Defects and Developmental Disabilities","ror":"https://ror.org/021asz590","country_code":"US","type":"facility","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934","https://openalex.org/I4210109585"]}],"countries":["US"],"is_corresponding":true,"raw_author_name":"April L Dawson","raw_affiliation_strings":["National Center on Birth Defects and Developmental Disabilities, CDC, Atlanta, Georgia, USA","National Center on Birth Defects and Developmental Disabilities, CDC, 1600 Clifton Road, MS-E86, Atlanta, GA 30333, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Center on Birth Defects and Developmental Disabilities, CDC, Atlanta, Georgia, USA","institution_ids":["https://openalex.org/I1289490764","https://openalex.org/I4210109585"]},{"raw_affiliation_string":"National Center on Birth Defects and Developmental Disabilities, CDC, 1600 Clifton Road, MS-E86, Atlanta, GA 30333, USA","institution_ids":["https://openalex.org/I1289490764","https://openalex.org/I4210109585"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017503080","display_name":"Sarah C. Tinker","orcid":"https://orcid.org/0000-0002-7610-6288","observed_orcids":["https://orcid.org/0000-0002-7610-6288"]},"institutions":[{"id":"https://openalex.org/I1289490764","display_name":"Centers for Disease Control and Prevention","ror":"https://ror.org/042twtr12","country_code":"US","type":"government","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934"]},{"id":"https://openalex.org/I4210109585","display_name":"National Center on Birth Defects and Developmental Disabilities","ror":"https://ror.org/021asz590","country_code":"US","type":"facility","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934","https://openalex.org/I4210109585"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Sarah C Tinker","raw_affiliation_strings":["National Center on Birth Defects and Developmental Disabilities, CDC, Atlanta, Georgia, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Center on Birth Defects and Developmental Disabilities, CDC, Atlanta, Georgia, USA","institution_ids":["https://openalex.org/I1289490764","https://openalex.org/I4210109585"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5023727621","display_name":"Denise J. Jamieson","orcid":"https://orcid.org/0000-0003-2597-1201","observed_orcids":["https://orcid.org/0000-0003-2597-1201"]},"institutions":[{"id":"https://openalex.org/I1289490764","display_name":"Centers for Disease Control and Prevention","ror":"https://ror.org/042twtr12","country_code":"US","type":"government","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934"]},{"id":"https://openalex.org/I4210113004","display_name":"National Center for Chronic Disease Prevention and Health Promotion","ror":"https://ror.org/021rths28","country_code":"US","type":"facility","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934","https://openalex.org/I4210113004"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Denise J Jamieson","raw_affiliation_strings":["National Center for Chronic Disease Prevention and Health Promotion, CDC, Atlanta, Georgia, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Center for Chronic Disease Prevention and Health Promotion, CDC, Atlanta, Georgia, USA","institution_ids":["https://openalex.org/I1289490764","https://openalex.org/I4210113004"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5074486406","display_name":"Charlotte A. Hobbs","orcid":"https://orcid.org/0000-0002-3964-5952","observed_orcids":["https://orcid.org/0000-0002-3964-5952"]},"institutions":[{"id":"https://openalex.org/I79620101","display_name":"University of Arkansas for Medical Sciences","ror":"https://ror.org/00xcryt71","country_code":"US","type":"education","lineage":["https://openalex.org/I79620101"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Charlotte A Hobbs","raw_affiliation_strings":["College of Medicine, University of Arkansas for Medical Sciences, Fayetteville, Arkansas, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"College of Medicine, University of Arkansas for Medical Sciences, Fayetteville, Arkansas, USA","institution_ids":["https://openalex.org/I79620101"]}]},{"author_position":"middle","author":{"id":null,"display_name":"R J Berry","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I1289490764","display_name":"Centers for Disease Control and Prevention","ror":"https://ror.org/042twtr12","country_code":"US","type":"government","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934"]},{"id":"https://openalex.org/I4210109585","display_name":"National Center on Birth Defects and Developmental Disabilities","ror":"https://ror.org/021asz590","country_code":"US","type":"facility","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934","https://openalex.org/I4210109585"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"R J Berry","raw_affiliation_strings":["National Center on Birth Defects and Developmental Disabilities, CDC, Atlanta, Georgia, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Center on Birth Defects and Developmental Disabilities, CDC, Atlanta, Georgia, USA","institution_ids":["https://openalex.org/I1289490764","https://openalex.org/I4210109585"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5067842074","display_name":"Sonja A. Rasmussen","orcid":"https://orcid.org/0000-0002-0574-4928","observed_orcids":["https://orcid.org/0000-0002-0574-4928"]},"institutions":[{"id":"https://openalex.org/I1289490764","display_name":"Centers for Disease Control and Prevention","ror":"https://ror.org/042twtr12","country_code":"US","type":"government","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934"]},{"id":"https://openalex.org/I4210109567","display_name":"Office of Infectious Diseases","ror":"https://ror.org/01z6p8p31","country_code":"US","type":"government","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934","https://openalex.org/I4210109567"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Sonja A Rasmussen","raw_affiliation_strings":["Office of Infectious Diseases, CDC, Atlanta, Georgia, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Office of Infectious Diseases, CDC, Atlanta, Georgia, USA","institution_ids":["https://openalex.org/I1289490764","https://openalex.org/I4210109567"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5065709493","display_name":"Marlene Anderka","orcid":"https://orcid.org/0000-0002-7377-2621","observed_orcids":["https://orcid.org/0000-0002-7377-2621"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Marlene Anderka","raw_affiliation_strings":["Massachusetts Center for Birth Defects Research and Prevention, Boston, Massachusetts, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Massachusetts Center for Birth Defects Research and Prevention, Boston, Massachusetts, USA","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078160338","display_name":"Kim M. Keppler\u2010Noreuil","orcid":"https://orcid.org/0000-0001-8250-164X","observed_orcids":["https://orcid.org/0000-0001-8250-164X"]},"institutions":[{"id":"https://openalex.org/I1299303238","display_name":"National Institutes of Health","ror":"https://ror.org/01cwqze88","country_code":"US","type":"government","lineage":["https://openalex.org/I1299022934","https://openalex.org/I1299303238"]},{"id":"https://openalex.org/I4210090236","display_name":"National Human Genome Research Institute","ror":"https://ror.org/00baak391","country_code":"US","type":"facility","lineage":["https://openalex.org/I1299022934","https://openalex.org/I1299303238","https://openalex.org/I4210090236"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kim M Keppler-Noreuil","raw_affiliation_strings":["National Human Genome Research Institute, NIH, Bethesda, Maryland, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Human Genome Research Institute, NIH, Bethesda, Maryland, USA","institution_ids":["https://openalex.org/I1299303238","https://openalex.org/I4210090236"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005663969","display_name":"Angela E. Lin","orcid":"https://orcid.org/0000-0002-1145-4572","observed_orcids":["https://orcid.org/0000-0002-1145-4572"]},"institutions":[{"id":"https://openalex.org/I4210087915","display_name":"Massachusetts General Hospital","ror":"https://ror.org/002pd6e78","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I4210087915","https://openalex.org/I48633490"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Angela E Lin","raw_affiliation_strings":["Genetics Unit, MassGeneral Hospital for Children, Boston, Massachusetts, USA","Massachusetts Center for Birth Defects Research and Prevention, Boston, Massachusetts, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Genetics Unit, MassGeneral Hospital for Children, Boston, Massachusetts, USA","institution_ids":["https://openalex.org/I4210087915"]},{"raw_affiliation_string":"Massachusetts Center for Birth Defects Research and Prevention, Boston, Massachusetts, USA","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5055104036","display_name":"Jennita Reefhuis","orcid":"https://orcid.org/0000-0002-4747-4831","observed_orcids":["https://orcid.org/0000-0002-4747-4831"]},"institutions":[{"id":"https://openalex.org/I1289490764","display_name":"Centers for Disease Control and Prevention","ror":"https://ror.org/042twtr12","country_code":"US","type":"government","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934"]},{"id":"https://openalex.org/I4210109585","display_name":"National Center on Birth Defects and Developmental Disabilities","ror":"https://ror.org/021asz590","country_code":"US","type":"facility","lineage":["https://openalex.org/I1289490764","https://openalex.org/I1299022934","https://openalex.org/I4210109585"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jennita Reefhuis","raw_affiliation_strings":["National Center on Birth Defects and Developmental Disabilities, CDC, Atlanta, Georgia, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"National Center on Birth Defects and Developmental Disabilities, CDC, Atlanta, Georgia, USA","institution_ids":["https://openalex.org/I1289490764","https://openalex.org/I4210109585"]}]},{"author_position":"last","author":{"id":null,"display_name":"the National Birth Defects Prevention Study","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"the National Birth Defects Prevention Study","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":8,"corresponding_author_ids":["https://openalex.org/A5102236196"],"corresponding_institution_ids":["https://openalex.org/I1289490764","https://openalex.org/I4210109585"],"apc_list":null,"apc_paid":null,"fwci":6.5271,"has_fulltext":false,"cited_by_count":66,"citation_normalized_percentile":{"value":0.96574996,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":99},"biblio":{"volume":"70","issue":"11","first_page":"1114","last_page":"1121"},"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":0.9990000128746033,"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":0.9990000128746033,"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/T12716","display_name":"Congenital Anomalies and Fetal Surgery","score":0.0007999999797903001,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"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/T11156","display_name":"Reproductive Health and Technologies","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2743","display_name":"Reproductive Medicine"},"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/twinning","display_name":"twinning","score":0.9520000219345093},{"id":"https://openalex.org/keywords/major-birth-defects","display_name":"major birth defects","score":0.8460000157356262},{"id":"https://openalex.org/keywords/infertility-treatment","display_name":"infertility treatment","score":0.6650000214576721},{"id":"https://openalex.org/keywords/zygosity","display_name":"zygosity","score":0.7360000014305115},{"id":"https://openalex.org/keywords/monozygotic-twins","display_name":"monozygotic twins","score":0.953000009059906},{"id":"https://openalex.org/keywords/dizygotic-twins","display_name":"dizygotic twins","score":0.9959999918937683},{"id":"https://openalex.org/keywords/ventricular-septal-defect","display_name":"ventricular septal defect","score":0.8989999890327454},{"id":"https://openalex.org/keywords/cloacal-exstrophy","display_name":"cloacal exstrophy","score":0.996999979019165},{"id":"https://openalex.org/keywords/hypoplastic-left-heart-syndrome","display_name":"hypoplastic left heart syndrome","score":0.9980000257492065},{"id":"https://openalex.org/keywords/omphalocele","display_name":"omphalocele","score":0.9990000128746033},{"id":"https://openalex.org/keywords/national-birth-defects-prevention-study","display_name":"National Birth Defects Prevention Study","score":0.7940000295639038}],"concepts":[{"id":"https://openalex.org/C6840138","wikidata":"https://www.wikidata.org/wiki/Q109856","display_name":"Crystal twinning","level":3,"score":0.6534543633460999},{"id":"https://openalex.org/C131872663","wikidata":"https://www.wikidata.org/wiki/Q5284418","display_name":"Obstetrics","level":1,"score":0.4226519465446472},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.33487486839294434},{"id":"https://openalex.org/C192562407","wikidata":"https://www.wikidata.org/wiki/Q228736","display_name":"Materials science","level":0,"score":0.15412083268165588},{"id":"https://openalex.org/C87976508","wikidata":"https://www.wikidata.org/wiki/Q1498213","display_name":"Microstructure","level":2,"score":0.0},{"id":"https://openalex.org/C191897082","wikidata":"https://www.wikidata.org/wiki/Q11467","display_name":"Metallurgy","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000013","descriptor_name":"Congenital Abnormalities","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":true},{"descriptor_ui":"D000013","descriptor_name":"Congenital Abnormalities","qualifier_ui":"Q000517","qualifier_name":"prevention & control","is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","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":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012307","descriptor_name":"Risk Factors","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D014429","descriptor_name":"Twins, Dizygotic","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":true},{"descriptor_ui":"D014430","descriptor_name":"Twins, Monozygotic","qualifier_ui":"Q000706","qualifier_name":"statistics & numerical data","is_major_topic":true},{"descriptor_ui":"D014481","descriptor_name":"United States","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":false},{"descriptor_ui":"D016022","descriptor_name":"Case-Control Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":4,"locations":[{"id":"doi:10.1136/jech-2015-206302","doi":"https://doi.org/10.1136/jech-2015-206302","is_oa":false,"landing_page_url":"https://doi.org/10.1136/jech-2015-206302","pdf_url":null,"source":{"id":"https://openalex.org/S156988948","display_name":"Journal of Epidemiology & Community Health","issn_l":"0141-7681","issn":["0141-7681","0142-467X","0143-005X","1470-2738"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","doyens","erih-plus","jufo-3","ki-jl-2","medline","norway-2","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310319945","host_organization_name":"BMJ","host_organization_lineage":["https://openalex.org/P4310319945"],"host_organization_lineage_names":["BMJ"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Journal of Epidemiology and Community Health","raw_type":"journal-article"},{"id":"pmid:27325867","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/27325867","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":"Journal of epidemiology and community health","raw_type":"Journal Article"},{"id":"pmh:oai:pubmedcentral.nih.gov:5299593","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/5299593","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"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":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"J Epidemiol Community Health","raw_type":"Text"},{"id":"pmh:oai:open-archive.highwire.org:jech:70/11/1114","doi":null,"is_oa":false,"landing_page_url":"http://jech.bmj.com/cgi/content/short/70/11/1114","pdf_url":null,"source":{"id":"https://openalex.org/S4406923041","display_name":"HighWire Press Open Archive","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"TEXT"}],"best_oa_location":{"id":"pmh:oai:pubmedcentral.nih.gov:5299593","doi":null,"is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/5299593","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":true,"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":"acceptedVersion","is_accepted":true,"is_published":false,"raw_source_name":"J Epidemiol Community Health","raw_type":"Text"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","score":0.98580002784729,"display_name":"Good health and well-being"}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[{"id":"https://openalex.org/G1145863725","display_name":null,"funder_award_id":"DD09\u2010001","funder_id":"https://openalex.org/F4320332162","funder_display_name":"Centers for Disease Control and Prevention"},{"id":"https://openalex.org/G7543494365","display_name":null,"funder_award_id":"CC999999","funder_id":"https://openalex.org/F4320332161","funder_display_name":"National Institutes of Health"}],"funders":[{"id":"https://openalex.org/F4320332161","display_name":"National Institutes of Health","ror":"https://ror.org/01cwqze88"},{"id":"https://openalex.org/F4320332162","display_name":"Centers for Disease Control and Prevention","ror":"https://ror.org/042twtr12"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":28,"referenced_works":["https://openalex.org/W172124805","https://openalex.org/W1769785745","https://openalex.org/W1792681201","https://openalex.org/W1897763284","https://openalex.org/W1921661894","https://openalex.org/W1964666605","https://openalex.org/W1985699255","https://openalex.org/W1985914379","https://openalex.org/W1993080743","https://openalex.org/W1998397837","https://openalex.org/W2027086452","https://openalex.org/W2040890658","https://openalex.org/W2044213572","https://openalex.org/W2044601446","https://openalex.org/W2070688986","https://openalex.org/W2075532505","https://openalex.org/W2078968878","https://openalex.org/W2092196676","https://openalex.org/W2107315915","https://openalex.org/W2125538479","https://openalex.org/W2126503856","https://openalex.org/W2133326212","https://openalex.org/W2136243502","https://openalex.org/W2142719293","https://openalex.org/W2146277612","https://openalex.org/W2158772171","https://openalex.org/W2353663961","https://openalex.org/W6637981096"],"related_works":["https://openalex.org/W1792681201","https://openalex.org/W1769785745","https://openalex.org/W2409832890","https://openalex.org/W3010610063","https://openalex.org/W2464136817","https://openalex.org/W2044213572","https://openalex.org/W2561576807","https://openalex.org/W43890680","https://openalex.org/W2010693237","https://openalex.org/W2125538479"],"abstract_inverted_index":{"BACKGROUND:":[0],"Twinning":[1],"has":[2],"been":[3],"associated":[4],"with":[5,97,184,192,224],"many":[6],"types":[7],"of":[8,27,61,81,120,136,153,176,188,229,248],"birth":[9,40,63,74,90,100,230],"defects,":[10],"although":[11],"previous":[12],"studies":[13,19],"have":[14],"had":[15],"inconsistent":[16],"findings.":[17],"Many":[18],"lack":[20],"information":[21],"about":[22],"potential":[23],"confounders,":[24],"particularly":[25],"use":[26,119,175,247],"fertility":[28,121,177,249],"treatment.":[29,122,250],"Our":[30],"objective":[31],"was":[32],"to":[33,68,132],"assess":[34],"the":[35,43,55,66,134,140,193,207,215,219],"association":[36,183],"between":[37,71,149],"twinning":[38,72,150,185],"and":[39,73,83,92,108,126,151,168,202],"defects":[41,64,167,231],"in":[42,65,206,218,241],"National":[44],"Birth":[45,238],"Defects":[46],"Prevention":[47],"Study":[48],"(NBDPS).":[49],"METHODS:":[50],"We":[51],"used":[52,131],"data":[53,125],"from":[54,214],"NBDPS,":[56],"a":[57,98,127,181,226],"population-based,":[58],"case-control":[59],"study":[60,77],"major":[62,89,99],"USA,":[67],"evaluate":[69],"associations":[70,148],"defects.":[75],"The":[76,157],"population":[78],"included":[79],"mothers":[80,172],"twin":[82],"singleton":[84],"controls":[85],"(live-born":[86],"infants":[87,96],"without":[88],"defects),":[91],"cases":[93],"(fetuses":[94],"or":[95],"defect)":[101],"born":[102],"October":[103],"1997-December":[104],"2007.":[105],"Adjusted":[106],"ORs":[107],"95%":[109],"CIs":[110],"were":[111,130,161,211],"estimated":[112,208],"using":[113],"multivariable":[114],"logistic":[115],"regression":[116],"stratified":[117],"by":[118,246],"Twin":[123],"sex-pairing":[124],"simulation":[128],"approach":[129],"estimate":[133],"zygosity":[135],"twins.":[137,237],"RESULTS:":[138],"In":[139],"unassisted":[141],"conception":[142],"stratum,":[143],"we":[144,179],"observed":[145,162,180],"significant":[146,182],"positive":[147],"29":[152],"45":[154],"defect":[155,190,239],"groups.":[156],"largest":[158,194],"effect":[159,195],"estimates":[160,196,205],"for":[163,186,197],"multiple":[164],"ventricular":[165],"septal":[166],"cloacal":[169],"exstrophy.":[170],"Among":[171],"reporting":[173],"any":[174],"treatments,":[178],"5":[187],"25":[189],"groups,":[191],"hypoplastic":[198],"left":[199],"heart":[200],"syndrome":[201],"omphalocele.":[203],"OR":[204],"monozygotic":[209],"stratum":[210],"generally":[212],"further":[213],"null":[216],"than":[217],"dizygotic":[220],"stratum.":[221],"CONCLUSIONS:":[222],"Compared":[223],"singletons,":[225],"wide":[227],"range":[228],"are":[232],"significantly":[233],"more":[234],"common":[235],"among":[236],"risk":[240],"twins":[242],"may":[243],"be":[244],"differential":[245]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":5},{"year":2024,"cited_by_count":6},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":10},{"year":2021,"cited_by_count":8},{"year":2020,"cited_by_count":11},{"year":2019,"cited_by_count":10},{"year":2018,"cited_by_count":7}],"updated_date":"2026-11-03T10:50:19.383937","created_date":"2016-07-22T00:00:00"}
