The Cog-4 is a suboptimal cognitive screening tool in acute stroke

Takeaway

  • The cognitive subscale Cog-4 cannot accurately identify cognitive impairment early after stroke.

Why this matters

    It is important to identify cognitive difficulties early after stroke to ensure timely treatment and rehabilitation. However, the Cog-4 has a limited ability to detect early cognitive deficits compared with structured and comprehensive tests and should not be used as a screening tool to assess cognitive functions early after stroke.