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

• Clinical stroke cohort including a minimum of 50 patients
• Clinical confirmation of stroke, including cerebral imaging
• Documented entry criteria for the cohort including assessment of cognitive state (for example exclusion of dementia at study recruitment or baseline cognitive assessment)
• Exclusion of patients with subarachnoid haemorrhage from the cohort
• Documented consent or waiver of consent following local IRB-approved procedure
• Appropriate copyright permissions have been obtained for use of psychological assessments
• Availability of multi-domain cognitive assessment data and / or outcomes data describing clinical diagnosis of a recognised psychological syndrome (for example dementia or a dementia subtype)
• Clear description of timing of assessment in relation to index stroke
• Monitoring procedures existed to validate data