Evidence map›Paper›PMID 32891121›Full record

ArticleBMC nephrology2020

Lower serum sodium levels predict poor clinical outcomes in patients with insomnia.

Eunjin Bae, Tae Won Lee, Ha Nee Jang, Hyun Seop Cho, Sehyun Jung, Seunghye Lee, Se-Ho Chang, Dong Jun Park

Open access · goldAbstract read
In one paragraph

Article in BMC nephrology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.6field-weighted citation impact, top 27% 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

4 citing papers in PubMed, 5 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Article
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

8 authors at 3 institutions in 1 country.

Eunjin BaeDepartment of Internal Medicine, College of Medicine, Gyeongsang National University and Gyeongsang National University Changwon Hospital , Changwon, South Korea.
Tae Won LeeDepartment of Internal Medicine, College of Medicine, Gyeongsang National University and Gyeongsang National University Changwon Hospital , Changwon, South Korea.
Ha Nee JangDepartment of Internal Medicine, College of Medicine, Gyeongsang National University and Gyeongsang National University Hospital, Jinju, South Korea.
Hyun Seop ChoDepartment of Internal Medicine, College of Medicine, Gyeongsang National University and Gyeongsang National University Hospital, Jinju, South Korea.
Sehyun JungDepartment of Internal Medicine, College of Medicine, Gyeongsang National University and Gyeongsang National University Hospital, Jinju, South Korea.
Seunghye LeeDepartment of Internal Medicine, College of Medicine, Gyeongsang National University and Gyeongsang National University Hospital, Jinju, South Korea.
Se-Ho ChangDepartment of Internal Medicine, College of Medicine, Gyeongsang National University and Gyeongsang National University Hospital, Jinju, South Korea.
Dong Jun ParkDepartment of Internal Medicine, College of Medicine, Gyeongsang National University and Gyeongsang National University Changwon Hospital , Changwon, South Korea. drpdj@naver.com.ORCID 0000-0001-5233-537X
Gyeongsang National University Hospital · KRChangwon National University · KRGyeongsang National University · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe association between lower serum sodium levels and the clinical outcomes of insomnia patients remains unclear. We explored whether lower serum sodium is associated with poor clinical outcomes in patients with insomnia.

methodsWe retrospectively enrolled patients with a diagnosis of insomnia from January 2011 to December 2012. We divided participants into three groups according to initial serum sodium level: tertile 1 (< 138 mmol/L), tertile 2 (138.0-140.9 mmol/L), and tertile 3 (≥ 141.0 mmol/L). To calculate the relative risk of death, hazard ratios (HRs) and 95% confidence intervals (CIs) were obtained using Cox proportional hazard models.

resultsA total of 412 patients with insomnia were included, of whom 13.6% (n = 56) had hyponatremia. Patients with lower serum sodium concentrations were older and had lower hemoglobin, calcium, phosphorus, and albumin levels. At the median follow-up of 49.4 months, 44 patients had died and 62 experienced acute kidney injury (AKI). Kaplan-Meier analysis showed significantly higher mortality in patients in the lowest tertile for serum sodium. The lowest tertile of the serum sodium level and the AKI were associated with all-cause mortality. However, the lowest tertile of the serum sodium level was not significantly associated with AKI.

conclusionsThe lowest tertile of the serum sodium level was associated with a higher mortality rate in insomnia patients. Our results suggest that the serum sodium level could serve as a prognostic factor in insomniacs; patients with lower sodium levels require particular care.

Indexed as

MortalityAcute Kidney InjuryAgedCause of DeathFemaleHumansHypernatremiaHyponatremiaLogistic ModelsMaleMiddle AgedPrognosisProportional Hazards ModelsSleep Initiation and Maintenance DisordersSodiumSodiumHyponatremiaInsomniaMortalitySerum sodium

Identifiers

PMID32891121
PMCPMC7487902
OpenAlexW3083292786

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.