Evidence map›Paper›PMID 30808365›Full record

Observational studyRespiratory research2019

Comparison of therapeutic effects of inhaled corticosteroids on three subtypes of cough variant asthma as classified by the impulse oscillometry system.

Hiroyuki Sugawara, Atsushi Saito, Saori Yokoyama, Kazunori Tsunematsu, Hiroki Takahashi

Open access · goldAbstract readComparative StudyObservational Study
In one paragraph

Observational study in Respiratory research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.7field-weighted citation impact, top 15% 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

14 citing papers in PubMed, 21 citations in OpenAlex.

  1. Article
  2. Article
  3. Cough-Variant Asthma: A Review of Clinical Characteristics, Diagnosis, and Pathophysiology.The journal of allergy and clinical immunology. In practice · 2025
    Review
  4. Article
  5. Observational
  6. Article
  7. Article
  8. Article
  9. Association between annual change in FEVBMC pulmonary medicine · 2022
    Article
  10. Exploring the 175-year history of spirometry and the vital lessons it can teach us today.European respiratory review : an official journal of the European Respiratory Society · 2021
    Review
  11. Article
  12. Article
  13. Observational
  14. 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

5 authors at 2 institutions in 1 country.

Hiroyuki SugawaraSugawara Internal Medicine and Respiratory Clinic, Tomakomai, 053-0821, Japan.
Atsushi SaitoDepartment of Respiratory Medicine and Allergology, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, 060-8543, Japan. a-saito@sapmed.ac.jp.ORCID http://orcid.org/0000-0003-3430-884X
Saori YokoyamaDepartment of Respiratory Medicine and Allergology, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, 060-8543, Japan.
Kazunori TsunematsuSugawara Internal Medicine and Respiratory Clinic, Tomakomai, 053-0821, Japan.
Hiroki TakahashiDepartment of Respiratory Medicine and Allergology, Sapporo Medical University School of Medicine, Sapporo, Hokkaido, 060-8543, Japan.
Sapporo Medical University · JPNational Institute of Technology, Tomakomai College · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCough variant asthma (CVA) is one of the most common causes of chronic persistent cough, and early treatment with inhaled corticosteroids (ICSs) is recommended to attenuate the inflammation and remodeling. The impulse oscillometry system (IOS) is a novel device for respiratory functional assessment that has not yet been assessed in terms of CVA. Therefore, we investigated the relationship between CVA and IOS, and the difference in therapeutic effects of ICSs among the subtype classifications by IOS.

methodsThe following ICSs were randomly prescribed in daily medical care: coarse-particle ICS (fluticasone propionate [FP]), fine-particle ICS (mometasone furoate [MF]), and moderate-particle ICS (budesonide [BUD]). Treatment effects were assessed by the Leicester cough questionnaire (LCQ) and were compared among three separated subtypes based on IOS measurements: central, peripheral, and resistless.

resultsRegarding LCQ scores, in the central type, the LCQ of the MF group was significantly lower than FP and BUD. In the peripheral type, the LCQ of the FP group was significantly lower than MF and BUD. In the resistless type, the LCQ of the MF group was significantly lower than BUD. Also, IOS factors were improved by 4 weeks of therapy with ICS. Thus, there was strong relationship between subtypes and particle size in terms of effectiveness.

conclusionsThere is a strong relationship between IOS subtype classification and ICS particle size in terms of therapeutic efficiency in CVA. It appears important to determine the ICS particle size, based on the IOS subtype classification, before treatment.

Indexed as

Administration, InhalationAdrenal Cortex HormonesAdultAnti-Asthmatic AgentsAsthmaCoughFemaleHumansMaleMiddle AgedOscillometryRandom AllocationRespiratory Function TestsRetrospective StudiesTreatment OutcomeAdrenal Cortex HormonesAnti-Asthmatic AgentsChronic coughCough variant asthmaImpulse oscillometry systemInhaled corticosteroidsPulmonary function test

Identifiers

PMID30808365
PMCPMC6390374
OpenAlexW2923218240

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.