<?xml version='1.0' encoding='UTF-8'?><codeBook xmlns="ddi:codebook:2_5" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="ddi:codebook:2_5 https://ddialliance.org/Specification/DDI-Codebook/2.5/XMLSchema/codebook.xsd" version="2.5"><docDscr><citation><titlStmt><titl>Background data for: Patient-Tailored Levothyroxine Dosage with Pharmacokinetic/Pharmacodynamic Modeling: A Novel Approach After Total Thyroidectomy</titl><IDNo agency="DOI">doi:10.18710/T5BQ22</IDNo></titlStmt><distStmt><distrbtr source="archive">DataverseNO</distrbtr><distDate>2026-04-13</distDate></distStmt><verStmt source="archive"><version date="2026-04-13" type="RELEASED">1</version></verStmt><biblCit>Konst, Solveig; Brun, Vegard; Hellemo, Lars, 2026, "Background data for: Patient-Tailored Levothyroxine Dosage with Pharmacokinetic/Pharmacodynamic Modeling: A Novel Approach After Total Thyroidectomy", https://doi.org/10.18710/T5BQ22, DataverseNO, V1</biblCit></citation></docDscr><stdyDscr><citation><titlStmt><titl>Background data for: Patient-Tailored Levothyroxine Dosage with Pharmacokinetic/Pharmacodynamic Modeling: A Novel Approach After Total Thyroidectomy</titl><IDNo agency="DOI">doi:10.18710/T5BQ22</IDNo></titlStmt><rspStmt><AuthEnty affiliation="https://ror.org/00wge5k78">Konst, Solveig</AuthEnty><AuthEnty affiliation="https://ror.org/00wge5k78">Brun, Vegard</AuthEnty><AuthEnty affiliation="https://ror.org/01f677e56">Hellemo, Lars</AuthEnty><othId role="Researcher">Kaut, Michal</othId><othId role="Data Collector">Eriksen, Brun</othId><othId role="Data Collector">Selseth, Ruth</othId><othId role="Data Collector">Johansson, Kenth</othId><othId role="Data Collector">Vik, Renate</othId><othId role="Data Collector">Davidsen, Benedicte</othId></rspStmt><prodStmt><producer abbr="UiT">UiT The Arctic University of Norway</producer><grantNo agency="Regional Research Funds North Norway">357035</grantNo><grantNo agency="Northern Norway Regional Health Authority">HN1004-17</grantNo></prodStmt><distStmt><distrbtr source="archive">DataverseNO</distrbtr><distrbtr abbr="UiT" URI="https://dataverse.no/dataverse/uit">UiT The Arctic University of Norway</distrbtr><contact affiliation="UiT The Arctic University of Norway" email="vegard.h.brun@uit.no">Brun, Vegard</contact><depositr>Konst, Solveig Robertsen</depositr><depDate>2026-02-23</depDate></distStmt><holdings URI="https://doi.org/10.18710/T5BQ22"/></citation><stdyInfo><subject><keyword xml:lang="en">Medicine, Health and Life Sciences</keyword><keyword>Thyroidectomy</keyword><keyword>Patient-centered medicine</keyword><keyword>Levothyroxine</keyword><keyword>Hypothyroidism</keyword><keyword>Pharmacokinetic modeling</keyword></subject><abstract date="2026-02-23">&lt;p>This dataset constitutes the background data for the study: Patient-Tailored Levothyroxine Dosage with Pharmacokinetic/Pharmacodynamic Modeling: A Novel Approach After Total Thyroidectomy (doi: 10.1089/thy.2021.0125). The study's objective was to investigate whether a new pharmacokinetic/pharmacodynamic model for Levothyroxine dosage lead to better and faster levothyroxine dosage. Patients >18 years with a planned total thyroidectomy were eligible for participation.&lt;/p>
&lt;p>Data were collected in two phases. The first phase, conducted from 2016 to 2017, comprised the pilot study. Data from the pilot study was used to develop the pharmacokinetic/pharmacodynamic model.&lt;/p>
&lt;p>The second phase, conducted from 2017 to 2019, consisted of a randomised controlled trial utilizing the Pharmacokinetic/pharmacodynamic model for calculating each patient's optimal levothyroxine dosage.&lt;/p>
&lt;p>Data collected in the two phases are patient demographics, laboratory results and levothyroxine dosage. Laboratory results and levothyroxine dosage were collected at multiple time points during the study, both before and after surgery. Data from the pilot study and the RCT have been merged and anonymised.&lt;/p>
&lt;p>All participants provided written informed consent for data collection.&lt;/p></abstract><sumDscr><collDate cycle="P1" event="start" date="2016">2016</collDate><collDate cycle="P1" event="end" date="2019">2019</collDate><nation>Norway</nation><nation>Sweden</nation><dataKind>Clinical data</dataKind></sumDscr></stdyInfo><method><dataColl><sources><dataSrc>Data were collected directly from patients or from patients’ electronic health records. Anonymized data are reproduced here in accordance with approval by the Norwegian Regional Ethics Committee (2016/1782) and the Swedish Ethical Review Authority (443-17).</dataSrc></sources></dataColl><anlyInfo/></method><dataAccs><setAvail/><useStmt/><notes type="DVN:TOU" level="dv">&lt;a href="http://creativecommons.org/publicdomain/zero/1.0">CC0 1.0&lt;/a></notes></dataAccs><othrStdyMat><relPubl><citation><titlStmt><titl>Brun VH, Eriksen AH, Selseth R, Johansson K, Vik R, Davidsen B, Kaut M, Hellemo L. Patient-Tailored Levothyroxine Dosage with Pharmacokinetic/Pharmacodynamic Modeling: A Novel Approach After Total Thyroidectomy. Thyroid. 2021 Sep;31(9):1297-1304. doi: 10.1089/thy.2021.0125. Epub 2021 Jun 22. PMID: 33980057; PMCID: PMC8558060.</titl><IDNo agency="doi">10.1089/thy.2021.0125</IDNo></titlStmt><biblCit>Brun VH, Eriksen AH, Selseth R, Johansson K, Vik R, Davidsen B, Kaut M, Hellemo L. Patient-Tailored Levothyroxine Dosage with Pharmacokinetic/Pharmacodynamic Modeling: A Novel Approach After Total Thyroidectomy. Thyroid. 2021 Sep;31(9):1297-1304. doi: 10.1089/thy.2021.0125. Epub 2021 Jun 22. PMID: 33980057; PMCID: PMC8558060.</biblCit></citation><ExtLink URI="https://doi.org/10.1089/thy.2021.0125"/></relPubl></othrStdyMat></stdyDscr><otherMat ID="f274077" URI="https://dataverse.no/api/access/datafile/274077" level="datafile"><labl>00-readme.txt</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">text/plain</notes></otherMat><otherMat ID="f270022" URI="https://dataverse.no/api/access/datafile/270022" level="datafile"><labl>consent-form.pdf</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/pdf</notes></otherMat><otherMat ID="f274074" URI="https://dataverse.no/api/access/datafile/274074" level="datafile"><labl>data-privacy-assessment.pdf</labl><txt>Brief summary of the legal and ethical justification for publishing this dataset with open access.</txt><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">application/pdf</notes></otherMat><otherMat ID="f274075" URI="https://dataverse.no/api/access/datafile/274075" level="datafile"><labl>Lab-results.txt</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">text/plain</notes></otherMat><otherMat ID="f274076" URI="https://dataverse.no/api/access/datafile/274076" level="datafile"><labl>Levothyroxine-Dosage.txt</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">text/plain</notes></otherMat><otherMat ID="f273824" URI="https://dataverse.no/api/access/datafile/273824" level="datafile"><labl>Patient-demographic.txt</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">text/plain</notes></otherMat><otherMat ID="f273823" URI="https://dataverse.no/api/access/datafile/273823" level="datafile"><labl>Thyrogen-Dosage.txt</labl><notes level="file" type="DATAVERSE:CONTENTTYPE" subject="Content/MIME Type">text/plain</notes></otherMat></codeBook>