Individual Study / KLOSCAD

Korean Longitudinal Study on Cognitive Aging and Dementia

Korean Longitudinal Study on Cognitive Aging and Dementia

KLOSCAD logo
Networks -
Datasets -
Variables -
Start Year
2009
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Members

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Investigators Contacts
  • Prof. Ki Woong Kim
    Seoul National University Bundang Hospital
  • Ji Won Han
    Seoul National University Bundang Hospital

Design

Study design
Cohort
Follow Up
After baseline assessment, participants are followed-up every two years.

Marker Paper

Han JW, Kim TH, Kwak KP, Kim K, Kim BJ, Kim SG, Kim JL, Kim TH, Moon SW, Park JY, Park JH. Overview of the Korean Longitudinal Study on Cognitive Aging and Dementia. Psychiatry investigation. 2018 Aug;15(8):767.

PUBMED 30086611

Recruitment

Recruitment Target
  • Individuals

Number of Participants

Number of Participants
6,818
Number of Participants with Biological Samples
6,814

Access

Availability of data and biosamples

Possible Access to Data
Possible Access to Biosamples
Other

Timeline

KLOSCAD - Population

Selection Criteria
Minimum age
60
Newborns
Twins
Countries
  • South Korea
Ethnic Origin
Health Status
Supplementary Information about selection criteria

Recruitment

Sources of recruitment
  • General population
General Population
  • Selected sample
Supplementary Information
Random selection of participants was based on residential rosters.

Number of Participants

Number of Participants
6,818
Number of Participants with Biological Samples
6,818
Supplementary Information about selection criteria
Baseline: 6,818 participants
1st Follow-up: 5,131 participants
2nd Follow-up: 4,181 participants
Data Collection Events
# Name Description Start End
0 KLOSCAD - Baseline

Socio-demographic information, social activities and occupational history, driving risk, nutritional supplements and beverages use, at-risk drinking (using Alcohol Use Disorders Identification ...

2010-11 2012-10
1 KLOSCAD - Follow-Up 1

Activities of daily living were assessed using the Disability Assessment for Dementia and the Dependence Scale. Socio-demographic information, social activities and occupational history, ...

2012-11 2014-10
2 KLOSCAD - Follow-Up 2

Socio-demographic information, social activities and occupational history, driving risk, nutritional supplements and beverages use, at-risk drinking (using Alcohol Use Disorders Identification ...

2014-11 2016-10
3 KLOSCAD - Follow-Up 3

A face-to-face standardized diagnostic interview of cognitive disorders and comorbid conditions using the Consortium to Establish a Registry for Alzheimer's Disease Assessment Packet (CERAD-K) ...

2016-11 2018-10

Classifications

Socio-demographic and economic characteristics
Lifestyle and behaviours
Birth, pregnancy and reproductive health history
Perception of health, quality of life, development and functional limitations
Diseases
Symptoms and signs
Medication and supplements
Non-pharmacological interventions
Health and community care services utilization
Death
Physical measures and assessments
Laboratory measures
Cognition, personality and psychological measures and assessments
Life events, life plans, beliefs and values
Preschool, school and work life
Social environment and relationships
Physical environment
Administrative information
Cognitive functioning
Personality
Psychological distress and emotions
Other psychological measures and assessments
Perception of health
Quality of life
Life course development
Functional limitations
Other perception of health, quality of life and functional limitation-related information
Tobacco
Alcohol
Drugs
Nutrition
Breastfeeding
Physical activity
Sleep
Sexual behaviours and orientation
Technological devices
Misbehaviour and criminality
Other and unspecified lifestyle information

Socio-demographic and economic characteristics

Age/birthdate
Sex/gender
Marital/partner status
Education
Ethnicity, race and religion
Language

Lifestyle and behaviours

Tobacco
Alcohol
Physical activity

Perception of health, quality of life, development and functional limitations

Quality of life

Diseases

Neoplasms (C00-D48)
Endocrine, nutritional and metabolic diseases (E00-E90)
Mental and behavioural disorders (F00-F99)
Diseases of the nervous system (G00-G99)
Diseases of the eye and adnexa (H00-H59)
Diseases of the ear and mastoid process (H60-H95)
Diseases of the circulatory system (I00-I99)
Injury, poisoning and certain other consequences of external causes (S00-T98)
Diseases without precise specification or falling into multiple categories

Medication and supplements

Medication and supplement intake
Posology and protocol of administration

Non-pharmacological interventions

Surgical interventions
Laboratory diagnosis interventions

Physical measures and assessments

Physical characteristics
Anthropometry
Circulation and respiration
Sensory and pain

Laboratory measures

Biochemistry
Genomics

Cognition, personality and psychological measures and assessments

Cognitive functioning
Psychological distress and emotions

Administrative information

Date and time-related information
Physical and cognitive measure and biosample-related information

Cognitive functioning

Blessed Orientation Memory Concentration Test
Backward Digit Span Task
Boston Naming Test
Clinical Dementia Rating Scale
CERAD Constructional Praxis Recall
CERAD Word List Memory
Category Fluency Test
Clock Drawing Test
Digit Span Task
Frontal Assessment Battery
Forward Digit Span Task
Global Deterioration Scale
Hachinski Ischemic Score
Informant Questionnaire on Cognitive Decline in the Elderly
Mini-Mental State Examination
Severe Cognitive Impairment Rating Scale
Trail Making Test
Subjective Memory Complaints Questionnaire

Psychological distress and emotions

Geriatric Depression Scale
Neuropsychiatric Inventory
Patient Health Questionnaire

Quality of life

EuroQol Five Dimensions Questionnaire
Quality of Life in Alzheimer’s Disease

Tobacco

Fagerström Test for Nicotine Dependence

Alcohol

Alcohol Use Disorders Identification Test