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Trial · NCT00230802

Thyroid Hormone Dose Adjustment in Pregnancy

NCT00230802, Not applicable, Completed, Brigham and Women's Hospital; results first posted 2016-12-23

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Thyroid Hormone Dose Adjustment in Pregnancy. Trials, record NCT00230802. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT00230802

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Thyroid Hormone Dose Adjustment in Pregnancy
NCT number
NCT00230802
Status
Completed
Phases
Not applicable
Enrollment
48 participants, actual
Lead sponsor
Brigham and Women's Hospital
Conditions
Pregnancy, Hypothyroidism
Interventions
Anticipatory dose increase of levothyroxine, levothyroxine, levothyroxine
First posted
2005-10-03
Last updated
2016-12-23
Results first posted
2016-12-23

Source ClinicalTrials.gov

Registered outcomes3

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryProportion of Patients in Each Treatment Arm Euthyroid Through Gestation9 monthsThe proportion of patients in each treatment arm euthyroid through gestation
Secondarythe Participants in Each Arm Who Required Levothyroxine Dose Adjustments (Either Increased or Decreased) Occurred to Maintain a Euthyroid State9 months
SecondaryProportion of Subjects With Abnormal Thyroid Stimulating Hormone Values When Following an Every 4 Week Monitoring Schedule During Pregnancy.9 months

Outcomes3

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYProportion of Patients in Each Treatment Arm Euthyroid Through Gestation9 monthsproportion of patients in each treatment arm euthyroid through gestationparticipantsNUMBER
SECONDARYthe Participants in Each Arm Who Required Levothyroxine Dose Adjustments (Either Increased or Decreased) Occurred to Maintain a Euthyroid State9 monthsparticipantsNUMBER
SECONDARYProportion of Subjects With Abnormal Thyroid Stimulating Hormone Values When Following an Every 4 Week Monitoring Schedule During Pregnancy.9 monthsparticipantsNUMBER

Results by group6

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Proportion of Patients in Each Treatment Arm Euthyroid Through Gestation2 Tablet Increase24participants
Proportion of Patients in Each Treatment Arm Euthyroid Through Gestation3 Tablet Increase21participants
the Participants in Each Arm Who Required Levothyroxine Dose Adjustments (Either Increased or Decreased) Occurred to Maintain a Euthyroid State2 Tablet Increase10participants
the Participants in Each Arm Who Required Levothyroxine Dose Adjustments (Either Increased or Decreased) Occurred to Maintain a Euthyroid State3 Tablet Increase16participants
Proportion of Subjects With Abnormal Thyroid Stimulating Hormone Values When Following an Every 4 Week Monitoring Schedule During Pregnancy.2 Tablet Increase25participants
Proportion of Subjects With Abnormal Thyroid Stimulating Hormone Values When Following an Every 4 Week Monitoring Schedule During Pregnancy.3 Tablet Increase23participants

Participant flow6

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTED2 Tablet Increase25
Overall StudySTARTED3 Tablet Increase23
Overall StudyCOMPLETED2 Tablet Increase25
Overall StudyCOMPLETED3 Tablet Increase23
Overall StudyNOT COMPLETED2 Tablet Increase0
Overall StudyNOT COMPLETED3 Tablet Increase0

Adverse events0

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

None in this release.

Adverse event totals6

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortality2 Tablet Increase
Total, all-cause mortality3 Tablet Increase
Total, other adverse events2 Tablet Increase025
Total, other adverse events3 Tablet Increase023
Total, serious adverse events2 Tablet Increase025
Total, serious adverse events3 Tablet Increase023

Papers1

The papers the trial lists on ClinicalTrials.gov.

PMIDListed as
20463094RESULT

Source PubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons4

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

ComparisonSource
2 Tablet Increase vs 3 Tablet Increase: the Participants in Each Arm Who Required Levothyroxine Dose Adjustments (Either Increased or Decreased) Occurred to Maintain a Euthyroid StateTrial comparisons
2 Tablet Increase vs 3 Tablet Increase: Proportion of Subjects With Abnormal Thyroid Stimulating Hormone Values When Following an Every 4 Week Monitoring Schedule During Pregnancy.Trial comparisons
2 Tablet Increase vs 3 Tablet Increase: Proportion of Patients in Each Treatment Arm Euthyroid Through GestationTrial comparisons
2 Tablet Increase vs 3 Tablet Increase: serious adverse eventsTrial comparisons

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT00230802

GET https://conductscience.org/api/trials/v1/NCT00230802/registered