{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T21:44:00Z","timestamp":1791495840403,"version":"4.3.4"},"reference-count":33,"publisher":"American Medical Association (AMA)","issue":"12","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JAMA Netw Open"],"DOI":"10.1001\/jamanetworkopen.2020.30207","type":"journal-article","created":{"date-parts":[[2020,12,23]],"date-time":"2020-12-23T11:41:18Z","timestamp":1608723678000},"page":"e2030207","source":"Crossref","is-referenced-by-count":45,"title":["Association of Improved Periconception Hemoglobin A\n                    <sub>1c<\/sub>\n                    With Pregnancy Outcomes in Women With Diabetes"],"prefix":"10.1001","volume":"3","author":[{"given":"Alexander J. F.","family":"Davidson","sequence":"first","affiliation":[{"name":"Department of Medicine, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alison L.","family":"Park","sequence":"additional","affiliation":[{"name":"Department of Medicine, University of Toronto, Toronto, Ontario, Canada"},{"name":"ICES, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Howard","family":"Berger","sequence":"additional","affiliation":[{"name":"Department of Medicine, University of Toronto, Toronto, Ontario, Canada"},{"name":"Department of Medicine, St Michael\u2019s Hospital, Toronto, Ontario, Canada"},{"name":"Department of Obstetrics and Gynaecology, St Michael\u2019s Hospital, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kazuyoshi","family":"Aoyama","sequence":"additional","affiliation":[{"name":"Department of Medicine, University of Toronto, Toronto, Ontario, Canada"},{"name":"Department of Anesthesia and Pain Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada"},{"name":"Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziv","family":"Harel","sequence":"additional","affiliation":[{"name":"Department of Medicine, University of Toronto, Toronto, Ontario, Canada"},{"name":"ICES, Toronto, Ontario, Canada"},{"name":"Department of Medicine, St Michael\u2019s Hospital, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eyal","family":"Cohen","sequence":"additional","affiliation":[{"name":"Department of Medicine, University of Toronto, Toronto, Ontario, Canada"},{"name":"Child Health Evaluative Sciences, The Hospital for Sick Children, Toronto, Ontario, Canada"},{"name":"Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jocelynn L.","family":"Cook","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynaecology, University of Ottawa, Ottawa, Ontario, Canada"},{"name":"The Society of Obstetricians and Gynaecologists of Canada, Ottawa, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joel G.","family":"Ray","sequence":"additional","affiliation":[{"name":"Department of Medicine, University of Toronto, Toronto, Ontario, Canada"},{"name":"ICES, Toronto, Ontario, Canada"},{"name":"Department of Medicine, St Michael\u2019s Hospital, Toronto, Ontario, Canada"},{"name":"Department of Obstetrics and Gynaecology, St Michael\u2019s Hospital, Toronto, Ontario, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"10","published-online":{"date-parts":[[2020,12,23]]},"reference":[{"issue":"6","key":"zoi200953r1","doi-asserted-by":"publisher","first-page":"393","DOI":"10.3343\/alm.2013.33.6.393","article-title":"HbA1c: a review of analytical and clinical aspects.","volume":"33","author":"Weykamp","year":"2013","journal-title":"Ann Lab Med"},{"issue":"5","key":"zoi200953r2","doi-asserted-by":"crossref","DOI":"10.1371\/journal.pmed.1003104","article-title":"Risk of severe maternal morbidity or death in relation to elevated hemoglobin A1c preconception, and in early pregnancy: a population-based cohort study.","volume":"17","author":"Davidson","year":"2020","journal-title":"PLoS Med"},{"issue":"6","key":"zoi200953r3","doi-asserted-by":"publisher","first-page":"636","DOI":"10.1001\/jama.2009.113","article-title":"Maternal overweight and obesity and the risk of congenital anomalies: a systematic review and meta-analysis.","volume":"301","author":"Stothard","year":"2009","journal-title":"JAMA"},{"issue":"7","key":"zoi200953r4","doi-asserted-by":"publisher","first-page":"1920","DOI":"10.2337\/dc07-0278","article-title":"Use of maternal GHb concentration to estimate the risk of congenital anomalies in the offspring of women with prepregnancy diabetes.","volume":"30","author":"Guerin","year":"2007","journal-title":"Diabetes Care"},{"issue":"1","key":"zoi200953r5","doi-asserted-by":"publisher","first-page":"53","DOI":"10.1002\/bdrc.v105.1","article-title":"Effect of maternal diabetes on the embryo, fetus, and children: congenital anomalies, genetic and epigenetic changes and developmental outcomes.","volume":"105","author":"Ornoy","year":"2015","journal-title":"Birth Defects Res C Embryo Today"},{"issue":"2","key":"zoi200953r6","doi-asserted-by":"publisher","first-page":"285","DOI":"10.1007\/s00125-013-3108-5","article-title":"Pre-existing diabetes, maternal glycated haemoglobin, and the risks of fetal and infant death: a population-based study.","volume":"57","author":"Tennant","year":"2014","journal-title":"Diabetologia"},{"key":"zoi200953r7","doi-asserted-by":"publisher","first-page":"63","DOI":"10.1186\/1471-2393-10-63","article-title":"Preconception care for diabetic women for improving maternal and fetal outcomes: a systematic review and meta-analysis.","volume":"10","author":"Wahabi","year":"2010","journal-title":"BMC Pregnancy Childbirth"},{"issue":"5","key":"zoi200953r8","doi-asserted-by":"publisher","first-page":"79","DOI":"10.24095\/hpcdp.35.5.01","article-title":"Impact of pre-pregnancy diabetes mellitus on congenital anomalies, Canada, 2002-2012.","volume":"35","author":"Liu","year":"2015","journal-title":"Health Promot Chronic Dis Prev Can"},{"issue":"2","key":"zoi200953r10","doi-asserted-by":"publisher","first-page":"143","DOI":"10.1503\/cmaj.090979","article-title":"Proliferation of prenatal ultrasonography.","volume":"182","author":"You","year":"2010","journal-title":"CMAJ"},{"issue":"1","key":"zoi200953r11","doi-asserted-by":"publisher","first-page":"S47","DOI":"10.1016\/j.jcjd.2017.10.007","article-title":"Monitoring glycemic control.","volume":"42","author":"Berard","year":"2018","journal-title":"Can J Diabetes"},{"issue":"4","key":"zoi200953r12","doi-asserted-by":"crossref","DOI":"10.1098\/rsos.160850","article-title":"How do red blood cells know when to die?","volume":"4","author":"Arias","year":"2017","journal-title":"R Soc Open Sci"},{"issue":"2","key":"zoi200953r13","doi-asserted-by":"publisher","first-page":"388","DOI":"10.1007\/s11606-013-2595-x","article-title":"Pitfalls in hemoglobin A1c measurement: when results may be misleading.","volume":"29","author":"Radin","year":"2014","journal-title":"J Gen Intern Med"},{"issue":"1","key":"zoi200953r14","doi-asserted-by":"publisher","first-page":"9","DOI":"10.1111\/j.1753-0407.2009.00009.x","article-title":"Review of hemoglobin A(1c) in the management of diabetes.","volume":"1","author":"Gallagher","year":"2009","journal-title":"J Diabetes"},{"issue":"7","key":"zoi200953r15","doi-asserted-by":"crossref","DOI":"10.1001\/jamanetworkopen.2018.4571","article-title":"Prevalence of severe maternal morbidity and factors associated with maternal mortality in Ontario, Canada.","volume":"1","author":"Ray","year":"2018","journal-title":"JAMA Netw Open"},{"issue":"8","key":"zoi200953r16","first-page":"1","article-title":"Point-of-care hemoglobin A1c testing: an evidence-based analysis.","volume":"14","author":"Health Quality Ontario","year":"2014","journal-title":"Ont Health Technol Assess Ser"},{"issue":"8","key":"zoi200953r17","doi-asserted-by":"publisher","first-page":"984","DOI":"10.1093\/aje\/kwr183","article-title":"Performance of the modified Poisson regression approach for estimating relative risks from clustered prospective data.","volume":"174","author":"Yelland","year":"2011","journal-title":"Am J Epidemiol"},{"issue":"10","key":"zoi200953r18","doi-asserted-by":"publisher","first-page":"4284","DOI":"10.1182\/blood-2008-04-154112","article-title":"Red cell life span heterogeneity in hematologically normal people is sufficient to alter HbA1c.","volume":"112","author":"Cohen","year":"2008","journal-title":"Blood"},{"key":"zoi200953r19","doi-asserted-by":"publisher","first-page":"63","DOI":"10.1016\/j.cca.2012.12.026","article-title":"The long and winding road to optimal HbA1c measurement.","volume":"418","author":"Little","year":"2013","journal-title":"Clin Chim Acta"},{"issue":"1","key":"zoi200953r20","doi-asserted-by":"publisher","first-page":"2","DOI":"10.1016\/j.jclinepi.2008.11.004","article-title":"Absolute risk reductions, relative risks, relative risk reductions, and numbers needed to treat can be obtained from a logistic regression model.","volume":"63","author":"Austin","year":"2010","journal-title":"J Clin Epidemiol"},{"issue":"4","key":"zoi200953r21","first-page":"170","article-title":"The impact of maternal obesity on maternal and fetal health.","volume":"1","author":"Leddy","year":"2008","journal-title":"Rev Obstet Gynecol"},{"key":"zoi200953r22","doi-asserted-by":"publisher","first-page":"S255","DOI":"10.1016\/j.jcjd.2017.10.038","article-title":"Diabetes and pregnancy.","volume":"42","author":"Feig","year":"2018","journal-title":"Can J Diabetes"},{"issue":"12","key":"zoi200953r23","doi-asserted-by":"publisher","first-page":"1261","DOI":"10.1136\/jcp.2008.055244","article-title":"The placenta in preterm birth.","volume":"61","author":"Faye-Petersen","year":"2008","journal-title":"J Clin Pathol"},{"issue":"5","key":"zoi200953r24","doi-asserted-by":"publisher","first-page":"1496","DOI":"10.3390\/nu12051496","article-title":"The impact of an early lifestyle intervention on pregnancy outcomes in a cohort of insulin-resistant overweight and obese women.","volume":"12","author":"Menichini","year":"2020","journal-title":"Nutrients"},{"issue":"6","key":"zoi200953r26","doi-asserted-by":"publisher","first-page":"655","DOI":"10.1111\/ppe.v34.6","article-title":"Quantification of selection bias in studies of risk factors for birth defects among livebirths.","volume":"34","author":"Heinke","year":"2020","journal-title":"Paediatr Perinat Epidemiol"},{"issue":"4","key":"zoi200953r27","doi-asserted-by":"publisher","first-page":"249","DOI":"10.1007\/BF03405010","article-title":"Declining rate of folate insufficiency among adults following increased folic acid food fortification in Canada.","volume":"93","author":"Ray","year":"2002","journal-title":"Can J Public Health"},{"issue":"12","key":"zoi200953r28","doi-asserted-by":"publisher","first-page":"1086","DOI":"10.1016\/S1701-2163(16)30074-3","article-title":"The cost of unintended pregnancies in Canada: estimating direct cost, role of imperfect adherence, and the potential impact of increased use of long-acting reversible contraceptives.","volume":"37","author":"Black","year":"2015","journal-title":"J Obstet Gynaecol Can"},{"issue":"9","key":"zoi200953r29","doi-asserted-by":"publisher","first-page":"843","DOI":"10.1056\/NEJMsa1506575","article-title":"Declines in unintended pregnancy in the United States, 2008-2011.","volume":"374","author":"Finer","year":"2016","journal-title":"N Engl J Med"},{"issue":"2","key":"zoi200953r30","doi-asserted-by":"publisher","first-page":"171","DOI":"10.1016\/j.pec.2014.04.014","article-title":"Health literacy and its association with perception of teratogenic risks and health behavior during pregnancy.","volume":"96","author":"Lupattelli","year":"2014","journal-title":"Patient Educ Couns"},{"key":"zoi200953r31","doi-asserted-by":"publisher","first-page":"S172","DOI":"10.1016\/j.ajog.2015.10.340","article-title":"Poor glycemic control in gestational diabetes: associated factors and pregnancy outcomes.","volume":"214","author":"Scifres","year":"2016","journal-title":"Am J Obstet Gynecol"},{"issue":"2","key":"zoi200953r32","doi-asserted-by":"publisher","first-page":"146","DOI":"10.1080\/10810730.2010.499980","article-title":"Self-efficacy links health literacy and numeracy to glycemic control.","volume":"15","author":"Osborn","year":"2010","journal-title":"J Health Commun"},{"issue":"1","key":"zoi200953r33","doi-asserted-by":"publisher","first-page":"94","DOI":"10.1111\/nhs.2010.12.issue-1","article-title":"Impact of health literacy and patient trust on glycemic control in an urban USA population.","volume":"12","author":"Mancuso","year":"2010","journal-title":"Nurs Health Sci"},{"key":"zoi200953r9","unstructured":"Canadian Institute for Health Information. Too early, too small: a profile of small babies across Canada. Published 2009. Accessed August 15, 2020. https:\/\/secure.cihi.ca\/free_products\/too_early_too_small_en.pdf"},{"key":"zoi200953r25","unstructured":"Public Health Agency of Canada. Congenital anomalies in Canada 2013: a perinatal health surveillance report. Published September 2013. Accessed August 15, 2020. http:\/\/publications.gc.ca\/collections\/collection_2014\/aspc-phac\/HP35-40-2013-eng.pdf"}],"container-title":["JAMA Network Open"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/jamanetwork.com\/journals\/jamanetworkopen\/articlepdf\/2774458\/davidson_2020_oi_200953_1608064719.15145.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,12,23]],"date-time":"2020-12-23T11:41:41Z","timestamp":1608723701000},"score":1,"resource":{"primary":{"URL":"https:\/\/jamanetwork.com\/journals\/jamanetworkopen\/fullarticle\/2774458"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,12,23]]},"references-count":33,"journal-issue":{"issue":"12","published-print":{"date-parts":[[2020,12,1]]}},"URL":"https:\/\/doi.org\/10.1001\/jamanetworkopen.2020.30207","relation":{},"ISSN":["2574-3805"],"issn-type":[{"value":"2574-3805","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,12,23]]}}}