Evidence map›Paper›PMID 30196520›Full record

ArticleClinical and experimental nephrology2019

Biological variation of procalcitonin levels in hemodialysis patients.

Shun Kubo, Masaki Iwasaki, Mari Horie, Ai Matsukane, Toshihide Hayashi, Yuri Tanaka, Hiroki Hase, Nobuhiko Joki

Abstract readMulticenter Study
PubMed Publisher
In one paragraph

Article in Clinical and experimental nephrology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
1.3field-weighted citation impact, top 23% 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

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Observational
  4. Article
  5. Article
  6. Review
  7. Observational
  8. Article
  9. 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 1 institution in 1 country.

Shun KuboDivision of Nephrology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro-ku, Tokyo, 153-8515, Japan.
Masaki IwasakiDivision of Nephrology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro-ku, Tokyo, 153-8515, Japan.
Mari HorieDivision of Nephrology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro-ku, Tokyo, 153-8515, Japan.
Ai MatsukaneDivision of Nephrology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro-ku, Tokyo, 153-8515, Japan.
Toshihide HayashiDivision of Nephrology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro-ku, Tokyo, 153-8515, Japan.
Yuri TanakaDivision of Nephrology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro-ku, Tokyo, 153-8515, Japan.
Hiroki HaseDivision of Nephrology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro-ku, Tokyo, 153-8515, Japan.
Nobuhiko JokiDivision of Nephrology, Toho University Ohashi Medical Center, 2-17-6, Ohashi, Meguro-ku, Tokyo, 153-8515, Japan. jokinobuhiko@gmail.com.ORCID http://orcid.org/0000-0003-0285-8388
Toho University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThere is no obvious evidence regarding biological variation of procalcitonin (PCT) levels in hemodialysis (HD) patients without infections. The aim of this study was to determine the within- and between-person biological variation of PCT levels in HD patients without infections.

methodsA multicenter, prospective, cohort study enrolled 123 HD patients without any signs of infectious disease. Baseline PCT levels were determined pre- and post-HD, and then repeated pre-HD PCT measurements were performed at 2, 4, 8, 12, 16, 20, and 24 weeks after baseline blood-sampling, regardless of the presence or absence of infectious disease. Analytical variation (CVa), the within-person biological variation (CVi), between-person biological variation (CVb), individual index (II), and the reference change value (RCV) were calculated.

resultsThe mean age was 62.4 years, 76.4% were male, and 32.5% had diabetes. The mean duration of HD was 87 months. The median value for baseline pre-HD PCT was 0.23 ng/mL, which is much higher than the reference level for healthy individuals. PCT levels decreased of 46.6% after a single HD session. CVi was 24.9%, CVb was 54.2%, II was 0.46, and RCV was calculated as 96.4% with 99% probability.

conclusionsThe PCT level was significantly higher in stable HD patients without manifest bacterial infection. CVb was more variable than CVi in HD patients, which indicates that relative change is more important than absolute PCT levels for diagnosing bacterial infection, and doubling or more of the baseline PCT level may imply the presence of a bacterial infection in HD patients.

Indexed as

Renal DialysisAdultAgedFemaleHumansMaleMiddle AgedProcalcitoninProspective StudiesProcalcitoninBacterial infectionDialysis membraneIndividual indexProcalcitoninReference change value

Identifiers

PMID30196520
OpenAlexW2891283844

What OpenQuestion holds

Textmetadata
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.