We invite the contribution of trials that meet the following criteria:

• Minimum dataset of 100 patients
• Documented entry criteria
• Documented consent or waiver of consent following local IRB-approved procedure
• Baseline assessment within 24 hours of stroke onset
• Baseline assessment includes recording of neurological deficit by Oxford, NIHSS, SSS or similar
• Confirmation of stroke diagnosis by cerebral imaging within 7 days
• Outcome assessed between 1 and 6 months after stroke onset
• Outcome assessment includes recording of at least one of NIHSS, SSS, Rankin, Barthel or GOS
• Monitoring procedures existed to validate data