Evidence map›Paper›PMID 29768912›Full record

ArticleThe Korean journal of internal medicine2020

Association between urinary sodium levels and iodine status in Korea.

Jonghwa Ahn, Jang Ho Lee, Jiwoo Lee, Ji Yeon Baek, Eyun Song, Hye-Seon Oh, Mijin Kim, Suyeon Park, Min Ji Jeon, Tae Yong Kim and 3 more

Open access · goldAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in The Korean journal of internal medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 30% 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

8 citing papers in PubMed, 1 synthesis or guideline pooled it, 15 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
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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

13 authors at 3 institutions in 1 country.

Jonghwa AhnDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Jang Ho LeeDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Jiwoo LeeDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Ji Yeon BaekDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Eyun SongDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Hye-Seon OhDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Mijin KimDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Suyeon ParkDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Min Ji JeonDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Tae Yong KimDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Won Bae KimDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Young Kee ShongDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Won Gu KimDepartment of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
University of Ulsan · KRAsan Medical Center · KRUlsan College · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

aimsTo evaluate the association between the urinary sodium concentration and iodine status in different age groups in Korea.

methodsThis nationwide, population-based, cross-sectional study used data from the Korean National Health and Nutrition Examination Survey (VI 2-3, 2014 to 2015). We included 3,645 subjects aged 10 to 75 years with normal kidney function and without a history of thyroid disease. Adequate iodine intake was defined as a urinary iodine/creatinine (I/Cr) ratio of 85 to 220 µg/g. The urinary sodium/ creatinine (Na/Cr) ratios were classified as low (< 47 mmol/g), intermediate (47 to 114 mmol/g), or high (> 114 mmol/g).

resultsThe median urinary iodine concentration (UIC) was 292 µg/L (interquartile range [IQR], 157 to 672), and the median urinary I/Cr ratio was 195 µg/g (IQR, 104 to 478). Iodine deficiency (< 100 µg/L) and iodine excess (> 300 µg/L) were observed in 11.3% and 49.0% of subjects, respectively. The UIC was significantly associated with the urinary sodium concentration, and the urinary I/Cr ratio was significantly correlated with the urinary Na/Cr ratio (both p < 0.001). The distributions of UIC, urinary I/Cr ratio, and Na/Cr ratio varied among age groups. Low urinary I/Cr and Na/Cr ratios were most common in young adults (age, 19 to 29 years), while high urinary I/Cr and Na/Cr ratios were most common in elderly people (age, 60 to 75 years).

conclusionIodine intake was significantly associated with sodium intake in the Korean population. Our study suggested that an adequately low salt intake might be helpful for preventing iodine excess in Korea.

Indexed as

IodineAdultAgedCross-Sectional StudiesHumansMiddle AgedNutritional StatusNutrition SurveysRepublic of KoreaSodiumYoung AdultIodineSodiumDietIodineKoreaSodiumUrine

Identifiers

PMID29768912
PMCPMC7061011
OpenAlexW2803188363

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.