StrokeNCT03402451
Korean Stroke Cohort for Functioning and Rehabilitation
An observational study of Stroke and Disability, run by Samsung Medical Center.
Trial summary
Korean Stroke Cohort for functioning and rehabilitation (KOSCO) 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. Read more about this study
- Who is it for?
- Ages 19 years and older
- Conditions the study is for
- Stroke, Disability, Function
- How many people
- 7,858 participants
- Where
- No sites listed yet
- Study dates
- 1 Aug 2012to 31 Dec 2021
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 19 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
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.
Who may be able to join
- 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.
Who cannot join
- Transient ischemic attack.
- History of stroke.
- Traumatic intracerebral hemorrhage.
- Not Korean.
About this study
Korean Stroke Cohort for functioning and rehabilitation (KOSCO) 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. The main objectives of this study are to identify the factors that influence residual disability and long-term quality of life. The secondary objectives of this study are to determine the risk of mortality and recurrent vascular events in patients with acute first-ever stroke. 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.
- Conditions
- Stroke, Disability, Function, Rehabilitation, Burden
- Medical subject headings
- Stroke
What is being measured
The primary outcome is the main question the study is designed to answer.
Change in Korean modified Barthel Index
measurement for activities of daily living
Measured: 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
Measured: 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
measurement for activities of daily living
Measured: 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
measurement for cognitive function
Measured: 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
measurement for language function
Measured: 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
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
Measured: 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
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.
Measured: 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
measurement for depression. The scale is 0 to 15. 0 is normal whereas 15 indicates severe depression.
Measured: 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 Fugl-Meyer Assessment
measurement for motor function
Measured: 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 Functional Ambulatory Category
measurement for gait function
Measured: 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
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Jan 2018
- Study start1 Aug 2012
- Primary completion31 Dec 2021 (estimated)
- Study completion31 Dec 2021 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (10)Papers the sponsor has linked to this study.
- Other trials for StrokeStudies of the same condition, open and under way.
- More trials run by Samsung Medical CenterThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 7,858 participants (actual)
Sponsor and investigators
- Lead sponsor
- Samsung Medical Center
- Sponsor type
- University, hospital or other
- Collaborators
- Korean Center for Disease Control and Prevention
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03402451
- Sponsor's protocol ID
- 2012-06-016-001
- Status last verified
- Jul 2021
- First submitted
- 1 Jan 2018
- Last updated
- 19 Jul 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Chang WH, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Kim YH. Korean Stroke Cohort for functioning and rehabilitation (KOSCO): study rationale and protocol of a multi-centre prospective cohort study. BMC Neurol. 2015 Mar 25;15:42. doi: 10.1186/s12883-015-0293-5.
PubMed 25886039Chang WH, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Kang C, Kim YH. Predictors of functional level and quality of life at 6 months after a first-ever stroke: the KOSCO study. J Neurol. 2016 Jun;263(6):1166-77. doi: 10.1007/s00415-016-8119-y. Epub 2016 Apr 25.
PubMed 27113602Yoon JA, Kim DY, Sohn MK, Lee J, Lee SG, Lee YS, Han EY, Joo MC, Oh GJ, Han J, Park M, Park KP, Noh KH, Chang WH, Shin YI, Kim YH. Factors associated with improvement or decline in cognitive function after an ischemic stroke in Korea: the Korean stroke cohort for functioning and rehabilitation (KOSCO) study. BMC Neurol. 2017 Jan 10;17(1):9. doi: 10.1186/s12883-016-0780-3.
PubMed 28073355Chang WH, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Kim MS, Jang SY, Kim JH, Kim YH. Long-term functional outcomes of patients with very mild stroke: does a NIHSS score of 0 mean no disability? An interim analysis of the KOSCO study. Disabil Rehabil. 2017 May;39(9):904-910. doi: 10.3109/09638288.2016.1170214. Epub 2016 May 20.
PubMed 27206550Chang WH, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Kim JH, Kim YH. Return to work after stroke: The KOSCO Study. J Rehabil Med. 2016 Mar;48(3):273-9. doi: 10.2340/16501977-2053.
PubMed 26843361Jang SY, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Chang WH, Lee A, Kim JH, Kim YH. Chronic Kidney Disease and Functional Outcomes 6 Months after Ischemic Stroke: A Prospective Multicenter Study. Neuroepidemiology. 2016;46(1):24-30. doi: 10.1159/000441281. Epub 2015 Nov 26.
PubMed 26606379Yoon JA, Kim DY, Sohn MK, Lee J, Lee SG, Lee YS, Han EY, Joo MC, Oh GJ, Han J, Lee SW, Park M, Chang WH, Shin YI, Kim YH. Effect of stress hyperglycemia and intensive rehabilitation therapy in non-diabetic hemorrhagic stroke: Korean Stroke Cohort for Functioning and Rehabilitation. Eur J Neurol. 2016 Nov;23(11):1658-1665. doi: 10.1111/ene.13101. Epub 2016 Jul 22.
PubMed 27444813Jang SY, Shin YI, Kim DY, Sohn MK, Lee J, Lee SG, Oh GJ, Lee YS, Joo MC, Han EY, Chang WH, Kang C, Kim YH. Effect of obesity on functional outcomes at 6 months post-stroke among elderly Koreans: a prospective multicentre study. BMJ Open. 2015 Dec 18;5(12):e008712. doi: 10.1136/bmjopen-2015-008712.
PubMed 26685024Shin M, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Han J, Ahn J, Chang WH, Shin MA, Choi JY, Kang SH, Kim Y, Kim YH. Effect of Cognitive Reserve on Risk of Cognitive Impairment and Recovery After Stroke: The KOSCO Study. Stroke. 2020 Jan;51(1):99-107. doi: 10.1161/STROKEAHA.119.026829. Epub 2019 Dec 11.
PubMed 31822247Han J, Lee HI, Shin YI, Son JH, Kim SY, Kim DY, Sohn MK, Lee J, Lee SG, Oh GJ, Lee YS, Joo MC, Han EY, Chang WH, Kim YH. Factors influencing return to work after stroke: the Korean Stroke Cohort for Functioning and Rehabilitation (KOSCO) Study. BMJ Open. 2019 Jul 11;9(7):e028673. doi: 10.1136/bmjopen-2018-028673.
PubMed 31300502
Study at a glance
From the registry record, last updated by the sponsor on 19 Jul 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Korean Stroke Cohort for Functioning and Rehabilitation
- ClinicalTrials.gov ID
- NCT03402451
- Acronym / sponsor ID
- 2012-06-016-001
- Conditions
- Stroke, Disability, Function, Rehabilitation, Burden
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 7,858 participants (actual)
- Lead sponsor
- Samsung Medical CenterUniversity, hospital or other
- Collaborators
- Korean Center for Disease Control and Prevention
- Study start
- 1 Aug 2012 (actual)
- Primary completion
- 31 Dec 2021 (estimated)
- Study completion
- 31 Dec 2021 (estimated)
- First posted
- 18 Jan 2018 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Korean Stroke Cohort for functioning and rehabilitation (KOSCO) 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. The main objectives of this study are to identify the factors that influence residual disability and long-term quality of life. The secondary objectives of this study are to determine the risk of mortality and recurrent vascular events in patients with acute first-ever stroke. 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 design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 19 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- 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.
Key inclusion criteria (3 listed)
- 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.
Key exclusion criteria (4 listed)
- Transient ischemic attack.
- History of stroke.
- Traumatic intracerebral hemorrhage.
- Not Korean.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
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
Change in Euro Quality of Life-5 Dimensions
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
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
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 cognitive function
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
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
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.
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.
Change in Fugl-Meyer Assessment
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 motor function
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
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Jul 2021.
- Background: PubMed 25886039Chang WH, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Kim YH. Korean Stroke Cohort for functioning and rehabilitation (KOSCO): study rationale and protocol of a multi-centre prospective cohort study. BMC Neurol. 2015 Mar 25;15:42. doi: 10.1186/s12883-015-0293-5.
- Results publication: PubMed 27113602Chang WH, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Kang C, Kim YH. Predictors of functional level and quality of life at 6 months after a first-ever stroke: the KOSCO study. J Neurol. 2016 Jun;263(6):1166-77. doi: 10.1007/s00415-016-8119-y. Epub 2016 Apr 25.
- Results publication: PubMed 28073355Yoon JA, Kim DY, Sohn MK, Lee J, Lee SG, Lee YS, Han EY, Joo MC, Oh GJ, Han J, Park M, Park KP, Noh KH, Chang WH, Shin YI, Kim YH. Factors associated with improvement or decline in cognitive function after an ischemic stroke in Korea: the Korean stroke cohort for functioning and rehabilitation (KOSCO) study. BMC Neurol. 2017 Jan 10;17(1):9. doi: 10.1186/s12883-016-0780-3.
- Results publication: PubMed 27206550Chang WH, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Kim MS, Jang SY, Kim JH, Kim YH. Long-term functional outcomes of patients with very mild stroke: does a NIHSS score of 0 mean no disability? An interim analysis of the KOSCO study. Disabil Rehabil. 2017 May;39(9):904-910. doi: 10.3109/09638288.2016.1170214. Epub 2016 May 20.
- Results publication: PubMed 26843361Chang WH, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Kim JH, Kim YH. Return to work after stroke: The KOSCO Study. J Rehabil Med. 2016 Mar;48(3):273-9. doi: 10.2340/16501977-2053.
- Results publication: PubMed 26606379Jang SY, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Chang WH, Lee A, Kim JH, Kim YH. Chronic Kidney Disease and Functional Outcomes 6 Months after Ischemic Stroke: A Prospective Multicenter Study. Neuroepidemiology. 2016;46(1):24-30. doi: 10.1159/000441281. Epub 2015 Nov 26.
- Results publication: PubMed 27444813Yoon JA, Kim DY, Sohn MK, Lee J, Lee SG, Lee YS, Han EY, Joo MC, Oh GJ, Han J, Lee SW, Park M, Chang WH, Shin YI, Kim YH. Effect of stress hyperglycemia and intensive rehabilitation therapy in non-diabetic hemorrhagic stroke: Korean Stroke Cohort for Functioning and Rehabilitation. Eur J Neurol. 2016 Nov;23(11):1658-1665. doi: 10.1111/ene.13101. Epub 2016 Jul 22.
- Results publication: PubMed 26685024Jang SY, Shin YI, Kim DY, Sohn MK, Lee J, Lee SG, Oh GJ, Lee YS, Joo MC, Han EY, Chang WH, Kang C, Kim YH. Effect of obesity on functional outcomes at 6 months post-stroke among elderly Koreans: a prospective multicentre study. BMJ Open. 2015 Dec 18;5(12):e008712. doi: 10.1136/bmjopen-2015-008712.
- Derived from this study: PubMed 31822247Shin M, Sohn MK, Lee J, Kim DY, Lee SG, Shin YI, Oh GJ, Lee YS, Joo MC, Han EY, Han J, Ahn J, Chang WH, Shin MA, Choi JY, Kang SH, Kim Y, Kim YH. Effect of Cognitive Reserve on Risk of Cognitive Impairment and Recovery After Stroke: The KOSCO Study. Stroke. 2020 Jan;51(1):99-107. doi: 10.1161/STROKEAHA.119.026829. Epub 2019 Dec 11.
- Derived from this study: PubMed 31300502Han J, Lee HI, Shin YI, Son JH, Kim SY, Kim DY, Sohn MK, Lee J, Lee SG, Oh GJ, Lee YS, Joo MC, Han EY, Chang WH, Kim YH. Factors influencing return to work after stroke: the Korean Stroke Cohort for Functioning and Rehabilitation (KOSCO) Study. BMJ Open. 2019 Jul 11;9(7):e028673. doi: 10.1136/bmjopen-2018-028673.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
An observational study of Stroke and Disability, run by Samsung Medical Center.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: status not confirmed, as of the sponsor's last update on 19 Jul 2021. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
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). The study lists 10 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03402451, which also lists 10 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Jul 2021.