# Assessing the Diagnostic Accuracy of an On-line Questionnaire for Diagnosis of Primary Headache Disorders

> **NCT03304886** · — · COMPLETED · sponsor: **Stanford University** · enrollment: 250 (actual)

## Conditions studied

- Headache Disorders

## Interventions

_None listed._

## Key facts

- **NCT ID:** NCT03304886
- **Lead sponsor:** Stanford University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2018-02-28
- **Primary completion:** 2019-10-30
- **Final completion:** 2019-12-30
- **Target enrollment:** 250 (ACTUAL)
- **Last updated:** 2020-10-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT03304886

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT03304886, "Assessing the Diagnostic Accuracy of an On-line Questionnaire for Diagnosis of Primary Headache Disorders". Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/clinical/NCT03304886. Licensed CC0.

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