KLoSA: Study Overview

https://survey.keis.or.kr/eng/klosa/klosa01.jsp

The Korean Longitudinal Study of Aging (KLoSA) is a panel survey of people aged 45 and older and their partners, living in private households in Korea. Its main goal is to provide a data resource on aging for cross-disciplinary studies and policy-making. The survey elicits information about demographics, family structure, health, healthcare use, cognition, job status, income, assets, and life satisfaction.

Cohort Profile: Shin, C. (2019). Korean longitudinal study of aging. In D. Gu & M. E. Dupre (eds.), Encyclopedia of gerontology and population aging. Springer, Cham.

The KLoSA sample is a nationally representative sample of the population aged 45 years and older, living in private households in Korea. The initial sample was recruited in 2006 using a multistage, stratified probability sampling of households in all geographic areas except for Jeju Island.

Age Eligibility	Age 45 and older
People Interviewed per Household	All eligible residents of household
Spouse Inclusion	Only if age eligible
Representativeness	Nationally representative
Institutional Representation	None
Oversampling	None

The KLoSA core interview is carried out every two years through face-to-face interviews using computer-assisted personal interviewing (CAPI) since 2006.

In addition to the core interview, KLoSA also collects a number of other types of data.

End of Life Interview	Conducted starting at Waves 2 with someone knowledgeable about deceased respondents.
Job History Interview	Conducted between Waves 1 and 2 for all respondents.
Health Assessment	Conducted at each wave for all respondents.

The KLoSA Wave 1 sample included 7,574 households. Since then, the KLoSA sample was refreshed at Wave 5.

KLoSA does not include any data linkages.

Public access KLoSA data can be downloaded from the Korea Employment Information Service (KEIS). Data are anonymized and only require registration with KEIS.

Core interview End of life interview Health assessment	Available via: KEIS

The Gateway to Global Aging Data has created a user-friendly dataset based on KLoSA data designed to allow researchers to conduct cross-wave and cross-study analysis.

Harmonized KLoSA	A dataset of research-ready variables derived from the core interviews and health assessments of Waves 1-7.	Create using Gateway Stata Creation Code
Harmonized KLoSA End of Life	A dataset of research-ready variables derived from the end of life interviews of Waves 2-7	Create using Gateway Stata Creation Code

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KLoSA: Study Overview