Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 1,469

The DOI matches its Crossref record.

Cohort Profile: The National Health Insurance Service–National Sample Cohort (NHIS-NSC), South Korea

Lee, Juneyoung, Lee, Ji Sung, Park, Sook-Hee, Shin, Soon Ae, Kim, KeeWhan·2016·International Journal of Epidemiology

Abstract

The National Health Insurance Service–National Sample Cohort (NHIS-NSC) is a population-based cohort established by the National Health Insurance Service (NHIS) in South Korea. The sole purpose of constructing the cohort was to provide public health researchers and policy makers with representative, useful information regarding citizens’ utilization of health insurance and health examinations. Korea’s universal coverage health insurance system for all citizens was initiated in 1963, based on the National Medical Insurance Act, and was introduced for companies with over 500 employees in 1977. Universal healthcare coverage was achieved in 1989, only 12 years after its introduction, which is the fastest this has been achieved globally.1 In 2000 a single-insurer system, the NHIS, was launched by integrating more than 366 medical insurance organizations, for efficient system operation in Korea.1 The NHIS provides benefits for prevention, diagnosis, disease and injury treatment, as well as rehabilitation, births, deaths and health promotion. Currently the NHIS maintains and stores national records for healthcare utilization and prescriptions.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1093/ije/dyv319

Cites

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 1,469

Metadata

Authors
Lee, J., Lee, J. S., Park, S.-H., Shin, S. A., & Kim, K.
Venue
International Journal of Epidemiology
Published
2016-01-28
Volume
46
Issue
2
Pages
dyv319
ISSN
  • 0300-5771 (ISSN-L)
  • 1464-3685
OpenAlex
W2341326607
Cited by
1,469
References
0
FWCI
223.55
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Cohort Profile: The National Health Insurance Service–National Sample Cohort (NHIS-NSC), South Korea. https://app.cochat.ai/papers/10.1093/ije/dyv319
The paper
Lee, J., Lee, J. S., Park, S.-H., Shin, S. A., & Kim, K. (2016). Cohort Profile: The National Health Insurance Service–National Sample Cohort (NHIS-NSC), South Korea. International Journal of Epidemiology. https://doi.org/10.1093/ije/dyv319

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.