PMID- 32535618 OWN - NLM STAT- MEDLINE DCOM- 20210707 LR - 20210707 IS - 1464-3685 (Electronic) IS - 0300-5771 (Linking) VI - 50 IP - 2 DP - 2021 May 17 TI - Obstetric oxytocin exposure and ADHD and ASD among Danish and Finnish children. PG - 446-456 LID - 10.1093/ije/dyaa076 [doi] AB - BACKGROUND: Some studies have indicated an increased risk of attention deficit hyperactivity disorder (ADHD) and a small, sex-specific association with autism spectrum disorder (ASD) among children prenatally exposed to obstetric oxytocin. Since oxytocin is widely used in the obstetric ward, these potentially deleterious effects are of concern. Thus, we aimed to examine whether obstetric oxytocin treatment for labour induction or augmentation is associated with ADHD and ASD in offspring born in a two-country design based on data from Denmark and Finland. METHODS: This population-based study used data from national registers in Denmark and Finland. Singletons born in Denmark 2000-10 (n = 577 380) and Finland 1991-2010 (n = 945 543), who survived infancy, were followed until 31 December 2015. ADHD and ASD were defined using diagnostic codes. For ADHD, we also included information on prescribed and redeemed ADHD medication in the definition. Hazards ratios (HRs) with 95% confidence intervals (CI), modelled with age as the underlying time scale, were calculated to estimate the associations. RESULTS: Oxytocin was used in 31% and 46% of the included deliveries in Denmark and Finland, respectively. In crude analyses, prenatal oxytocin was associated with an approximately 20% increased risk of ADHD and ASD, but confounder adjustment attenuated the association. The adjusted HR was 1.03, 95% CI 1.01-1.05, for ADHD and 1.05, 95% CI 1.02-1.08, for ASD. The results were similar in across country and gender. CONCLUSIONS: We found an association between synthetic oxytocin and ADHD or ASD which is unlikely to reflect a causal association and thus should not support the concern of clinical use. Our results help to allay concerns of obstetric use of oxytocin causing ADHD or ASD. CI - (c) The Author(s) 2020; all rights reserved. Published by Oxford University Press on behalf of the International Epidemiological Association. FAU - Stokholm, Lonny AU - Stokholm L AUID- ORCID: 0000-0002-9727-6649 AD - Section of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark. FAU - Juhl, Mette AU - Juhl M AD - Department of Midwifery, Copenhagen University College, Copenhagen, Denmark. FAU - Talge, Nicole M AU - Talge NM AD - Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, USA. FAU - Gissler, Mika AU - Gissler M AD - Department of Information Services, THL Finnish Institute for Health and Welfare, Helsinki, Finland. AD - Research Centre for Child Psychiatry, University of Turku, Turku, Finland. AD - Division of Family Medicine, Department of Neurobiology, Care Sciences and Society, Karolinska Institute, Stockholm, Sweden. FAU - Obel, Carsten AU - Obel C AD - Section for General Medical Practice, Department of Public Health, Aarhus University, Aarhus, Denmark. FAU - Strandberg-Larsen, Katrine AU - Strandberg-Larsen K AD - Section of Epidemiology, Department of Public Health, University of Copenhagen, Copenhagen, Denmark. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Int J Epidemiol JT - International journal of epidemiology JID - 7802871 RN - 50-56-6 (Oxytocin) SB - IM CIN - Int J Epidemiol. 2021 May 17;50(2):457-458. PMID: 34000735 MH - *Attention Deficit Disorder with Hyperactivity/chemically induced/drug therapy/epidemiology MH - *Autism Spectrum Disorder/chemically induced/epidemiology MH - Child MH - Denmark/epidemiology MH - Female MH - Finland/epidemiology MH - Humans MH - Male MH - Oxytocin/adverse effects MH - Pregnancy OTO - NOTNLM OT - Attention deficit hyperactivity deficits OT - autism spectrum disorder OT - cross-national OT - oxytocin EDAT- 2020/06/15 06:00 MHDA- 2021/07/08 06:00 CRDT- 2020/06/15 06:00 PHST- 2020/04/06 00:00 [accepted] PHST- 2020/06/15 06:00 [pubmed] PHST- 2021/07/08 06:00 [medline] PHST- 2020/06/15 06:00 [entrez] AID - 5857280 [pii] AID - 10.1093/ije/dyaa076 [doi] PST - ppublish SO - Int J Epidemiol. 2021 May 17;50(2):446-456. doi: 10.1093/ije/dyaa076.