Evidence map›Paper›PMID 37383396›Full record

Observational studyFrontiers in endocrinology2023

The association between vitamin D supplementation and the long-term prognosis of differentiated thyroid cancer patients: a retrospective observational cohort study with propensity score matching.

Jong-Hyuk Ahn, Hoonsung Choi, Su-Jin Kim, Sun Wook Cho, Kyu Eun Lee, Do Joon Park, Young Joo Park

Open access · goldAbstract readObservational Study
In one paragraph

Observational study in Frontiers in endocrinology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.0field-weighted citation impact, top 12% 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

10 citing papers in PubMed, 10 citations in OpenAlex.

  1. Trial
  2. Serum vitamin D levels in patients with lung metastases.Biomedical papers of the Medical Faculty of the University Palacky, Olomouc, Czechoslovakia · 2026
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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 4 institutions in 1 country.

Jong-Hyuk AhnDepartment of Surgery, Chungbuk National University Hospital, Cheongju, Republic of Korea.
Hoonsung ChoiDepartment of Internal Medicine, Chung-Ang University College of Medicine, Seoul, Republic of Korea.
Su-Jin KimDepartment of Surgery, Seoul National University Hospital & Seoul National University College of Medicine, Seoul, Republic of Korea.
Sun Wook ChoDepartment of Internal Medicine, Seoul National University Hospital & Seoul National University College of Medicine, Seoul, Republic of Korea.
Kyu Eun LeeDepartment of Surgery, Seoul National University Hospital & Seoul National University College of Medicine, Seoul, Republic of Korea.
Do Joon ParkDepartment of Internal Medicine, Seoul National University Hospital & Seoul National University College of Medicine, Seoul, Republic of Korea.
Young Joo ParkDepartment of Internal Medicine and Genomic Medicine Institute, Medical Research Center, Seoul National University College of Medicine, Seoul, Republic of Korea.
Seoul National University · KRSeoul National University Hospital · KRChung-Ang University · KRChungbuk National University Hospital · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Objective: Benefits of vitamin D in various cancers have been reported, but its effects on differentiated thyroid cancer (DTC) have not been established. We aimed to analyze the effect of vitamin D supplementation on the prognosis of DTC. Methods: A retrospective observational cohort study was conducted on 9,739 DTC patients who underwent thyroidectomy from January 1997 to December 2016. Mortality was classified as all-cause, cancer-related, or thyroid cancer-related. Patients were divided into the "VD group" (supplemented with vitamin D) and the "control group" (without vitamin D supplementation). Propensity score matching was performed in a 1:1 ratio according to age, sex, tumor size, extrathyroidal extension (ETE), and lymph node metastasis (LNM) status, and 3,238 patients were assigned to each group. Kaplan-Meier curves, log-rank test and Cox proportional hazards regression analysis were performed. Results: The follow-up period was 10.7 ± 4.2 years. Clinicopathological variables between two groups were similar except for all-cause ( Discussion/conclusion: Vitamin D supplementation was positively associated with all-cause and total cancer mortality in DTC and might be a modifiable prognostic factor for improved survival. Further research will be needed to clarify the effect of vitamin D supplementation on DTC.

Indexed as

AdenocarcinomaThyroid NeoplasmsDietary SupplementsHumansPrognosisPropensity ScoreRetrospective StudiesVitamin DVitaminsVitamin DVitaminscause of deathmortalitypropensity scorethyroid carcinomavitamin D

Identifiers

PMID37383396
PMCPMC10296193
OpenAlexW4380537865

What OpenQuestion holds

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Registered trials

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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.