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Aim: Self-reported cognitive function has been described as an important complement to performance-based measurements but has seldom been investigated in cardiac arrest (CA) survivors. Therefore, the aim was to describe self-reported cognitive function and its association with health status, psychological distress, and life satisfaction., Methods: This study utilised data from the Swedish Register of Cardiopulmonary Resuscitation (2018-2021), registered 3-6 months post-CA. Cognitive function was assessed by a single question: "How do you experience your memory, concentration, and/or planning abilities today compared to before the cardiac arrest?". Health status was measured using the EQ VAS, psychological distress with the Hospital Anxiety and Depression Scale, and overall life satisfaction with the Life Satisfaction checklist. Data were analysed using binary logistic regression., Results: Among 4027 identified survivors, 1254 fulfilled the inclusion criteria. The mean age was 65.9 years (SD=13.4) and 31.7% were female. Self-reported cognitive function among survivors was reported as: 'Much worse' by 3.1%, 'Worse' by 23.8%, 'Unchanged' by 68.3%, 'Better' by 3.3%, and 'Much better' by 1.5%. Declined cognitive function was associated with lower health status (OR=2.76, 95%CI=2.09-3.64), symptoms of anxiety (OR=3.84, 95%CI=2.80-5.24) and depression (OR=4.52, 95%CI=3.22-6.32), and being dissatisfied with overall life (OR=2.74, 95%CI=2.11-3.54). These associations remained significant after age, sex, place of CA, aetiology, initial rhythm, initial witnessed status, and cerebral performance were controlled., Conclusions: Survivors experiencing declined cognitive function post-CA are at a higher risk of poorer health status, increased psychological distress, and reduced life satisfaction, and these risks should be acknowledged by healthcare professionals., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2025 The Author(s). Published by Elsevier B.V. All rights reserved.)