Korean Stroke Cohort for Functioning and Rehabilitation-II (KOSCO-II)

April 23, 2026 updated by: Yun-Hee Kim, Samsung Medical Center
Korean Stroke Cohort for functioning and rehabilitation (KOSCO)-II is a large, multi-centre prospective cohort study for all acute first-ever stroke patients admitted to participating hospitals in nine distinct areas of Korea. This study is designed as a 10-year, longitudinal follow-up investigating the residual disabilities, activity limitations, and quality of life issues arising in patients suffering from first-ever stroke as previous similar stroke cohort with KOSCO. The main objectives of this study are to identify and compare the factors that influence residual disability and long-term quality of life in first-ever acute stroke patients with KOSCO. The secondary objectives of this study are to determine and compare the risk of mortality and recurrent vascular events in first-ever acute stroke patients with KOSCO. Investigators will investigate longitudinal health behaviors and patterns of healthcare utilization, including stroke rehabilitation care. Investigators will also investigate the long-term health status, mood, and quality of life in stroke patient caregivers. In addition, investigators will identify baseline and ongoing characteristics that are associated with secondary outcomes.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Study Type

Observational

Enrollment (Actual)

2431

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • South Korea
      • Seoul, South Korea, 135-710
        • Samsung Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

19 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Sampling Method

Non-Probability Sample

Study Population

All consecutive patients with an acute first-ever stroke, admitted to the representative hospitals in the nine distinct areas of Korea, will be asked to participate in the study. Participating study centres are Samsung Medical Center, Seoul; Severance Hospital, Seoul; Konkuk University Hospital, Seoul; Chungnam National University Hospital, Daejeon; Chonnam National University Hospital, Gwangu; Pusan National University Yangsan Hospital, Yangsan; Kyungpook National University Hospital, Deagu; Wonkwang University Hospital, Iksan; and Jeju National University Hospital, Jeju.

Description

Inclusion Criteria:

  • First-ever acute stroke (ischemic stroke or intracerebral hemorrhage) with corresponding lesion and/or evidence of acute arterial occlusion on CT (A)- or MRI/A-scan.
  • Age ≥ 19 years at onset of stroke.
  • Onset of symptoms within seven days prior to inclusion.

Exclusion Criteria:

  • Transient ischemic attack.
  • History of stroke.
  • Traumatic intracerebral hemorrhage.
  • Not Korean.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Change in Korean modified Barthel Index
Time Frame: 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
measurement for activities of daily living Minimum: 0, Maximum: 100 Higher scores means a better.
3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
Change in Euro Quality of Life-5 Dimensions measurement for quality of life
Time Frame: 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
measurement for quality of life Minimum: 0, Maximum: 1 Higher scores means a better.
3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
Change in Functional Independence Measurement
Time Frame: 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
measurement for activities of daily living Minimum: 0, Maximum: 126 Higher scores means a better.
3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
Change in Korean Mini-Mental State Examination
Time Frame: 7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
measurement for language function Minimum: 0, Maximum: 30 Higher scores means a better.
7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
Change in Korean Version of Frenchay Aphasia Screening Test
Time Frame: 7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
measurement for language function Minimum: 0, Maximum: 30 Higher scores means a better.
7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset.
Change in modified Rankin Scale
Time Frame: 7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset
Measurement for disability. Range of total score 0 to 6. 0 is no disability at all and 6 is death. Therefore, greater value means worse functional status
7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset
Change in American Speech-Language-Hearing Association National Outcome Measurement System Swallowing Scale
Time Frame: 7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset
Measurement for swallowing function. Range of scale is 0 to 7, and greater value means better function. For example, 7 means no swallowing difficulty at all.
7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset
Change in Geriatric depression scale-short form
Time Frame: 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset

measurement for depression. The scale is 0 to 15. 0 is normal whereas 15 indicates severe depression.

Minimum: 0, Maximum: 15. Lower scores means a better.
3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset
Change in Functional Ambulatory Category
Time Frame: 7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset
measurement for gait function Minimum: 0, Maximum: 5 Higher scores means a better.
7 days, 3 months, 6 months, 12 months, 18 months, 24 months, 36 months, 48 months, 60 months, 72 months, 84 months, 96 months, 108 months after stroke onset

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Samsung Medical Center

Investigators

  • Principal Investigator: Yun-Hee Kim, MD.,PhD., Samsung Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 1, 2020

Primary Completion (Estimated)

December 31, 2030

Study Completion (Estimated)

December 31, 2030

Study Registration Dates

First Submitted

July 16, 2021

First Submitted That Met QC Criteria

July 16, 2021

First Posted (Actual)

July 26, 2021

Study Record Updates

Last Update Posted (Actual)

April 28, 2026

Last Update Submitted That Met QC Criteria

April 23, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2019-11-095

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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