Evidence map›Paper›PMID 31711456›Full record

ArticleBMC pulmonary medicine2019

Reference value for expiratory time constant calculated from the maximal expiratory flow-volume curve.

Takamitsu Ikeda, Yasuhiro Yamauchi, Kanji Uchida, Koji Oba, Takahide Nagase, Yoshitsugu Yamada

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

Article in BMC pulmonary medicine, 2019. 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
0.3field-weighted citation impact, top 33% 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, 4 citations in OpenAlex.

  1. Article
  2. Observational
  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

6 authors at 1 institution in 1 country.

Takamitsu IkedaDepartment of Anesthesiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan. voice_575@live.jp.ORCID http://orcid.org/0000-0002-1245-2958
Yasuhiro YamauchiDepartment of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Kanji UchidaDepartment of Anesthesiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Koji ObaDepartment of Biostatistics, School of Public Health, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Takahide NagaseDepartment of Respiratory Medicine, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
Yoshitsugu YamadaDepartment of Anesthesiology, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan.
The University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe expiratory time constant (RC

methodsSpirometric parameters were extracted from the records of patients aged 15 years or older who underwent pulmonary function testing as a routine preoperative examination before non-cardiac surgery at the University of Tokyo Hospital. RC

resultsWe retrospectively analyzed 777 spirometry records, and 62 patients were deemed to have airway obstruction according to Japanese spirometric reference values. The cut-off value for RC

conclusionsOur findings suggest that an RC

Indexed as

AdolescentAirway ObstructionExhalationFeasibility StudiesFemaleHumansLungMaleMaximal Expiratory Flow-Volume CurvesPredictive Value of TestsPreoperative PeriodReference ValuesRetrospective StudiesROC CurveSpirometrySurgical Procedures, OperativeExpiratory time constantMaximal expiratory flow-volume curvePulmonary function testRespiratory physiologySpirometry

Identifiers

PMID31711456
PMCPMC6849182
OpenAlexW2982881951

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.