# Gestational Age is Underestimated by Menstrual Dating Compared to Ultrasound Dating in Those Undergoing Abortion up to 20 Weeks

> **NCT00884403** · — · TERMINATED · sponsor: **University of British Columbia** · enrollment: 415 (actual)

## Conditions studied

- Abortion

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT00884403
- **Lead sponsor:** University of British Columbia
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** TERMINATED
- **Start date:** 2008-09
- **Primary completion:** 2009-06
- **Final completion:** 2009-06
- **Target enrollment:** 415 (ACTUAL)
- **Why stopped:** This study is a retrospective chart review study, not a clinical trial.
- **Last updated:** 2018-05-04

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT00884403

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT00884403, "Gestational Age is Underestimated by Menstrual Dating Compared to Ultrasound Dating in Those Undergoing Abortion up to 20 Weeks". Retrieved via MORVS 2026-10-20 from https://api.morvs.ai/clinical/NCT00884403. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*