{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,30]],"date-time":"2025-05-30T15:29:42Z","timestamp":1748618982233,"version":"3.37.3"},"reference-count":13,"publisher":"Georg Thieme Verlag KG","issue":"02","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Am J Perinatol"],"published-print":{"date-parts":[[2023,1]]},"abstract":"<jats:p>\n            Objective\u2003The study aimed to determine if single year birth certificate data can be used to identify regional and hospital variation in rates of short interpregnancy interval (IPI\u2009&lt;\u20096 months).<\/jats:p><jats:p>\n            Study Design\u2003IPI was estimated for multiparous women ages 15 to 44 years with singleton live births between 2015 and 2016. Perinatal outcomes, place of birth, maternal race, and data for IPI calculations were obtained by using birth certificates. IPI frequencies are presented as observed rates.<\/jats:p><jats:p>\n            Results\u2003The cohort included 562,039 multiparous women. Short IPI rates were similar to those obtained with analyses by using linked longitudinal data and confirmed the association with preterm birth. Short IPI rates varied by race and Hispanic nativity. There was substantial hospital (0.8\u20139%) and regional (2.9\u20136.2%) variation in short IPI rates.<\/jats:p><jats:p>\n            Conclusion\u2003IPI rates can be reliably obtained from current year birth certificate data. This can be a useful tool for quality improvement projects targeting interventions and rapidly assessing their progress to promote optimal birth spacing.<\/jats:p><jats:p>\n            Key Points\n          <\/jats:p>","DOI":"10.1055\/s-0041-1728819","type":"journal-article","created":{"date-parts":[[2021,5,3]],"date-time":"2021-05-03T22:52:08Z","timestamp":1620082328000},"page":"201-205","source":"Crossref","is-referenced-by-count":1,"title":["Measuring Variation in Interpregnancy Interval: Identifying Hotspots for Improvement Initiatives"],"prefix":"10.1055","volume":"40","author":[{"given":"Scarlett D.","family":"Karakash","sequence":"additional","affiliation":[{"name":"Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Stanford University School of Medicine, Stanford, California"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Elliott K.","family":"Main","sequence":"additional","affiliation":[{"name":"California Maternal Quality Care Collaborative, Stanford University School of Medicine, Stanford, California"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shen Chih","family":"Chang","sequence":"additional","affiliation":[{"name":"California Maternal Quality Care Collaborative, Division of Neonatal and Developmental Medicine, Department of Pediatrics, Stanford University School of Medicine, Stanford, California"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7438-4914","authenticated-orcid":false,"given":"Gary M.","family":"Shaw","sequence":"additional","affiliation":[{"name":"March of Dimes Prematurity Research Center at Stanford University School of Medicine and Lucile Packard Children's Hospital at Stanford, Stanford University School of Medicine, Stanford, California"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David K.","family":"Stevenson","sequence":"additional","affiliation":[{"name":"March of Dimes Prematurity Research Center at Stanford University School of Medicine and Lucile Packard Children's Hospital at Stanford, Stanford University School of Medicine, Stanford, California"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jeffrey B.","family":"Gould","sequence":"additional","affiliation":[{"name":"California Perinatal Quality Care Collaborative, Stanford University School of Medicine, Stanford, California"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"194","published-online":{"date-parts":[[2021,5,3]]},"reference":[{"issue":"15","key":"ref1","doi-asserted-by":"crossref","first-page":"1809","DOI":"10.1001\/jama.295.15.1809","article-title":"Birth spacing and risk of adverse perinatal outcomes: a meta-analysis","volume":"295","author":"A Conde-Agudelo","year":"2006","journal-title":"JAMA"},{"issue":"09","key":"ref2","doi-asserted-by":"crossref","first-page":"1175","DOI":"10.1038\/s41372-019-0402-1","article-title":"Short interpregnancy interval as a risk factor for preterm birth in non-Hispanic Black and White women in California","volume":"39","author":"J A Lonhart","year":"2019","journal-title":"J Perinatol"},{"issue":"12","key":"ref3","doi-asserted-by":"crossref","first-page":"2009","DOI":"10.1111\/1471-0528.14165","article-title":"Interpregnancy interval after live birth or pregnancy termination and estimated risk of preterm birth: a retrospective cohort study","volume":"123","author":"B Z Shachar","year":"2016","journal-title":"BJOG"},{"key":"ref4","doi-asserted-by":"crossref","first-page":"313","DOI":"10.1136\/bmj.327.7410.313","article-title":"Interpregnancy interval and risk of preterm birth and neonatal death: retrospective cohort study","volume":"327","author":"G C Smith","year":"2003","journal-title":"BMJ"},{"issue":"06","key":"ref5","doi-asserted-by":"crossref","first-page":"564.e1","DOI":"10.1016\/j.ajog.2014.02.002","article-title":"Relationship between interpregnancy interval and congenital anomalies","volume":"210","author":"I Chen","year":"2014","journal-title":"Am J Obstet Gynecol"},{"key":"ref6","doi-asserted-by":"crossref","first-page":"1255","DOI":"10.1136\/bmj.321.7271.1255","article-title":"Maternal morbidity and mortality associated with interpregnancy interval: cross sectional study","volume":"321","author":"A Conde-Agudelo","year":"2000","journal-title":"BMJ"},{"issue":"03","key":"ref7","doi-asserted-by":"crossref","first-page":"316.e1","DOI":"10.1016\/j.ajog.2016.12.018","article-title":"The influence of interpregnancy interval on infant mortality","volume":"216","author":"D McKinney","year":"2017","journal-title":"Am J Obstet Gynecol"},{"issue":"01","key":"ref8","doi-asserted-by":"crossref","first-page":"e51","DOI":"10.1097\/AOG.0000000000003025","article-title":"8: Interpregnancy Care","volume":"133","author":"American College of Obstetricians and Gynecologists","year":"2019","journal-title":"Obstet 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Epidemiol"},{"issue":"03","key":"ref14","first-page":"1","article-title":"Interpregnancy intervals in the United States: data from the Birth Certificate and the National Survey of Family Growth","volume":"64","author":"C E Copen","year":"2015","journal-title":"Natl Vital Stat Rep"},{"issue":"05","key":"ref15","first-page":"1","article-title":"Measuring gestational age in vital statistics data: transitioning to the obstetric estimate","volume":"64","author":"J A Martin","year":"2015","journal-title":"Natl Vital Stat Rep"}],"container-title":["American Journal of Perinatology"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/www.thieme-connect.de\/products\/ejournals\/pdf\/10.1055\/s-0041-1728819.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,12,31]],"date-time":"2022-12-31T00:31:09Z","timestamp":1672446669000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.thieme-connect.de\/DOI\/DOI?10.1055\/s-0041-1728819"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,5,3]]},"references-count":13,"journal-issue":{"issue":"02","published-online":{"date-parts":[[2022,12,30]]},"published-print":{"date-parts":[[2023,1]]}},"URL":"https:\/\/doi.org\/10.1055\/s-0041-1728819","archive":["Portico","CLOCKSS"],"relation":{},"ISSN":["0735-1631","1098-8785"],"issn-type":[{"type":"print","value":"0735-1631"},{"type":"electronic","value":"1098-8785"}],"subject":[],"published":{"date-parts":[[2021,5,3]]}}}