Evidence map›Paper›PMID 33979040›Full record

ArticleCancer medicine2021

Decreasing trends in thyroid cancer incidence in South Korea: What happened in South Korea?

Chang-Mo Oh, Jiwon Lim, Yuh Seog Jung, Yeol Kim, Kyu-Won Jung, Seri Hong, Young-Joo Won

Open access · goldAbstract read
In one paragraph

Article in Cancer medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
5.3field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

30 citing papers in PubMed, 44 citations in OpenAlex.

  1. [Ecological analysis of the association between dietary factors and thyroid carcinoma incidence based on GBD 2021 data].Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2026
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  8. FTOZhong nan da xue xue bao. Yi xue ban = Journal of Central South University. Medical sciences · 2025
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  12. The growing global burden of thyroid cancer overdiagnosis.The lancet. Diabetes & endocrinology · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 2 countries.

Chang-Mo OhDepartment of Preventive Medicine, School of Medicine, Kyung Hee University, Seoul, South Korea.ORCID 0000-0002-5709-9350
Jiwon LimDivision of Cancer Registration and Surveillance, National Cancer Control Institute, National Cancer Center, Goyang, South Korea.ORCID 0000-0002-3322-7792
Yuh Seog JungDepartment of Otolaryngology-Head and Neck Surgery, Head & Neck Oncology Clinic, Center for Thyroid Cancer, National Cancer Center Hospital, Goyang, South Korea.ORCID 0000-0002-9467-4916
Yeol KimDepartment of Cancer Control and Population Health, National Cancer Center Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, South Korea.ORCID 0000-0003-1142-1559
Kyu-Won JungDivision of Cancer Registration and Surveillance, National Cancer Control Institute, National Cancer Center, Goyang, South Korea.ORCID 0000-0002-4389-9701
Seri HongDivision of Cancer Registration and Surveillance, National Cancer Control Institute, National Cancer Center, Goyang, South Korea.ORCID 0000-0002-2536-0606
Young-Joo WonDivision of Cancer Registration and Surveillance, National Cancer Control Institute, National Cancer Center, Goyang, South Korea.ORCID 0000-0001-9861-6740
National Cancer Center · USKyung Hee University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSouth Korea has the highest incidence of thyroid cancer in the world. Our study examined the trends in thyroid cancer incidence by the histologic type, cancer stage, and age group and explored possible factors that affected thyroid cancer trends.

methodsWe conducted a descriptive epidemiological study using the national cancer registry data and cause of death data from 1999 to 2016 in South Korea. Age-standardized rates were calculated using Segi's world standard population. Joinpoint regression analysis was applied to determine the changing point of thyroid cancer trends according to histologic type; Surveillance, Epidemiology, and End Results (SEER) summary stage; and age groups by sex.

resultsThe age-standardized incidence of thyroid cancer in both men and women increased from 6.3 per 100,000 people in 1999 to 63.4 per 100,000 in 2012 but declined from 2012 to 2016, before the debates for over diagnosis of thyroid cancer began in 2014. The age-standardized mortality rate of thyroid cancer, incidence of distant thyroid cancer, and incidence of regional and localized thyroid cancer started to decline since early 2000, 2010, and 2012, respectively. In addition, thyroid cancer prevalence in thyroid nodules showed decreasing trends from 1999-2000 to 2013-2014.

conclusionsThe incidence of thyroid cancer began declining from 2012, before the debates for over diagnosis of thyroid cancer began in 2014. Changes in guidelines for thyroid nodule examinations may have affected this inflection point. Moreover, the debates for over diagnosis of thyroid cancer may have accelerated the decline in thyroid cancer.

Indexed as

Adenocarcinoma, FollicularAdultAgedAge DistributionCarcinoma, MedullaryFemaleHumansIncidenceMaleMiddle AgedNeoplasm StagingOverdiagnosisRegistriesRegression AnalysisRepublic of KoreaSEER ProgramincidencemortalityreservoirSouth Koreathyroid neoplasm

Identifiers

PMID33979040
PMCPMC8209587
OpenAlexW3160878673

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.