Development of clinical decision rule to exclude subarachnoid hemorrhage (SAH) for acute headache

Not Applicable

• Conditions: Patients with acute headache

• Registration Number: JPRN-UMIN000004871
• Lead Sponsor: Center Hospital of the National Center for Global Health and Medicine

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Results First Posted: 1900-01-01
• Study Start: 2011-01-16
• Study Completion: 2014-03-31
• Last Update Posted: 17 October 2023

Recruitment & Eligibility

• Status: Complete: follow-up complete
• Sex: All
• Target Recruitment: 1500

Inclusion Criteria

Not provided

Exclusion Criteria

1) patients with headache caused by trauma, drugs or alcohol 2) patients who are unconscious at the beginning of assessment 3) patients with recurrent headache syndromes

Study & Design

• Study Type: Observational
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Presence of subarachnoid hemorrhage in patient with acute headache The primary outcome: SAH is defined as any of the following: SAH on unenhanced computed tomography (CT) of the head; xanthochromia in cerebrospinal fluid; or bloody cerebrospinal fluid in the final tube sample at lumbar puncture.