{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,16]],"date-time":"2025-12-16T08:05:33Z","timestamp":1765872333444,"version":"3.48.0"},"reference-count":25,"publisher":"BMJ","issue":"9","funder":[{"DOI":"10.13039\/501100004963","name":"Seventh Framework Programme","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004963","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000272","name":"National Institute for Health Research","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000272","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Open"],"accepted":{"date-parts":[[2017,7,27]]},"published-print":{"date-parts":[[2017,9]]},"abstract":"<jats:sec>\n                    <jats:title>Objectives<\/jats:title>\n                    <jats:p>Inaccurate antibiotic dosing can lead to treatment failure, fuel antimicrobial resistance and increase side effects. The British National Formulary for Children (BNFC) guidance recommends oral antibiotic dosing according to age bands as a proxy for weight. Recommended doses of amoxicillin for children were increased in 2014 \u2018after widespread concerns of under dosing\u2019. However, the impact of dose changes on British children of different weights is unknown, particularly given the rising prevalence of childhood obesity in the UK. We aimed to estimate the accuracy of oral amoxicillin dosing in British children before and after the revised BNFC guidance in 2014.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting and participants<\/jats:title>\n                    <jats:p>We used data on age and weights for 1556 British children (aged 2\u201318 years) from a nationally representative cross-sectional survey, the Health Survey for England 2013.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Interventions<\/jats:title>\n                    <jats:p>We calculated the doses each child would receive using the BNFC age band guidance, before and after the 2014 changes, against the \u2018gold standard\u2019 weight-based dose of amoxicillin, as per its summary of product characteristics.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Primary outcome measure<\/jats:title>\n                    <jats:p>Assuming children of different weights were equally likely to receive antibiotics, we calculated the percentage of the children who would be at risk of misdosing by the BNFC age bands.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Before 2014, 54.6% of children receiving oral amoxicillin would have been underdosed and no child would have received more than the recommended dose. After the BNFC guidance changed in 2014, the number of children estimated as underdosed dropped to 5.8%, but 0.5% of the children would have received too high a dose.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Changes to the BNFC age-banded amoxicillin doses in 2014 have significantly reduced the proportion of children who are likely to be underdosed, with only a minimal rise in the number of those above the recommended range.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2017-016363","type":"journal-article","created":{"date-parts":[[2017,9,27]],"date-time":"2017-09-27T20:10:37Z","timestamp":1506543037000},"page":"e016363","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":3,"title":["Did the accuracy of oral amoxicillin dosing of children improve after British National Formulary dose revisions in 2014? National cross-sectional survey in England"],"prefix":"10.1136","volume":"7","author":[{"given":"Olivia","family":"Rann","sequence":"first","affiliation":[{"name":"Department of Primary Care and Public Health, Imperial College London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mike","family":"Sharland","sequence":"additional","affiliation":[{"name":"Paediatric Infectious Diseases Research Group, St George\u2019s University of London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paul","family":"Long","sequence":"additional","affiliation":[{"name":"Department of Pharmaceutical Science, King\u2019s College London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ian C K","family":"Wong","sequence":"additional","affiliation":[{"name":"Department of Practice and Policy, University College London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anthony A","family":"Laverty","sequence":"additional","affiliation":[{"name":"Department of Primary Care and Public Health, Imperial College London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Alex","family":"Bottle","sequence":"additional","affiliation":[{"name":"Department of Primary Care and Public Health, Imperial College London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Charlotte I","family":"Barker","sequence":"additional","affiliation":[{"name":"Paediatric Infectious Diseases Research Group, St George\u2019s University of London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Julia","family":"Bielicki","sequence":"additional","affiliation":[{"name":"Paediatric Infectious Diseases Research Group, St George\u2019s University of London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sonia","family":"Saxena","sequence":"additional","affiliation":[{"name":"Department of Primary Care and Public Health, Imperial College London, London, UK"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2017,9,27]]},"reference":[{"key":"2025121600004867000_7.9.e016363.1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2431-14-174"},{"key":"2025121600004867000_7.9.e016363.2","doi-asserted-by":"publisher","DOI":"10.1136\/adc.2010.183541"},{"key":"2025121600004867000_7.9.e016363.3","doi-asserted-by":"publisher","DOI":"10.1093\/jac\/dkm153"},{"key":"2025121600004867000_7.9.e016363.4","doi-asserted-by":"publisher","DOI":"10.1097\/QCO.0b013e328338c46d"},{"key":"2025121600004867000_7.9.e016363.5","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2007-3349"},{"key":"2025121600004867000_7.9.e016363.6","doi-asserted-by":"publisher","DOI":"10.3399\/bjgp14X677842"},{"key":"2025121600004867000_7.9.e016363.7","doi-asserted-by":"publisher","DOI":"10.1136\/adc.2008.147579"},{"key":"2025121600004867000_7.9.e016363.8","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.h5447"},{"key":"2025121600004867000_7.9.e016363.9","doi-asserted-by":"publisher","DOI":"10.1128\/AAC.23.2.252"},{"key":"2025121600004867000_7.9.e016363.10","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.d7803"},{"key":"2025121600004867000_7.9.e016363.11","first-page":"1577-8 CONTD","article-title":"Pediatric prescribing treatment of infections in childhood","volume":"2","author":"Cole","year":"1963","journal-title":"Br Med J"},{"key":"2025121600004867000_7.9.e016363.12","unstructured":"Unit JHS. 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Medicines and Products Regulatory Agency PAR Amoxicillin Sugar Free Suspension BP 125mg\/5ml and 250 mg\/5ml 2016. http:\/\/www.mhra.gov.uk\/home\/groups\/par\/documents\/websiteresources\/con140627.pdf."},{"key":"2025121600004867000_7.9.e016363.14","unstructured":"Statistics OfN. 2016: http:\/\/ons.gov.uk\/ons\/taxonomy\/index.html?nscl=Population."},{"key":"2025121600004867000_7.9.e016363.15","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.a2245"},{"key":"2025121600004867000_7.9.e016363.16","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(13)60937-X"},{"key":"2025121600004867000_7.9.e016363.17","doi-asserted-by":"crossref","first-page":"193","DOI":"10.1093\/ajcn\/80.1.193","article-title":"Undernutrition as an underlying cause of child deaths associated with diarrhea, pneumonia, malaria, and measles","volume":"80","author":"Caulfield","year":"2004","journal-title":"Am J Clin Nutr"},{"key":"2025121600004867000_7.9.e016363.18","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2012-3488"},{"key":"2025121600004867000_7.9.e016363.19","doi-asserted-by":"publisher","DOI":"10.1097\/00006454-199802000-00014"},{"key":"2025121600004867000_7.9.e016363.20","doi-asserted-by":"publisher","DOI":"10.1097\/PEC.0b013e3181cbeb00"},{"key":"2025121600004867000_7.9.e016363.21","doi-asserted-by":"publisher","DOI":"10.1001\/jamapediatrics.2015.132"},{"key":"2025121600004867000_7.9.e016363.22","doi-asserted-by":"publisher","DOI":"10.1002\/14651858.CD000023.pub4"},{"key":"2025121600004867000_7.9.e016363.23","first-page":"CD000219","article-title":"Antibiotics for acute otitis media in children","volume":"6","author":"Venekamp","year":"2015","journal-title":"Cochrane Database Syst Rev"},{"key":"2025121600004867000_7.9.e016363.24","first-page":"CD004417","article-title":"Delayed antibiotics for respiratory infections","volume":"4","author":"Spurling","year":"2013","journal-title":"Cochrane Database Syst Rev"},{"key":"2025121600004867000_7.9.e016363.25","doi-asserted-by":"crossref","DOI":"10.1136\/bmjopen-2016-012244","article-title":"Why do general practitioners prescribe antibiotics for upper respiratory tract infections to meet patient expectations: a mixed methods study","volume":"6","author":"Fletcher-Lartey","year":"2016","journal-title":"BMJ Open"}],"container-title":["BMJ Open"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bmjopen-2017-016363","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,16]],"date-time":"2025-12-16T08:00:53Z","timestamp":1765872053000},"score":1,"resource":{"primary":{"URL":"https:\/\/bmjopen.bmj.com\/lookup\/doi\/10.1136\/bmjopen-2017-016363"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,9]]},"references-count":25,"journal-issue":{"issue":"9","published-online":{"date-parts":[[2017,9,27]]},"published-print":{"date-parts":[[2017,9]]}},"alternative-id":["10.1136\/bmjopen-2017-016363"],"URL":"https:\/\/doi.org\/10.1136\/bmjopen-2017-016363","relation":{},"ISSN":["2044-6055","2044-6055"],"issn-type":[{"type":"print","value":"2044-6055"},{"type":"electronic","value":"2044-6055"}],"subject":[],"published":{"date-parts":[[2017,9]]}}}