Evidence map›Paper›PMID 30819154›Full record

ArticleRespiratory research2019

Extent, trends, and determinants of controller/reliever balance in mild asthma: a 14-year population-based study.

Amir Khakban, J Mark FitzGerald, Hamid Tavakoli, Larry Lynd, Solmaz Ehteshami-Afshar, Mohsen Sadatsafavi

Open access · goldAbstract read
In one paragraph

Article in Respiratory research, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.3field-weighted citation impact, top 42% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. 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.

Amir KhakbanCollaboration for Outcomes Research and Evaluation, Faculty of Pharmaceutical Sciences, the University of British Columbia, Vancouver, Canada.
J Mark FitzGeraldDivision of Respiratory Medicine and Institute for Heart and Lung Health, Vancouver General Hospital, the University of British Columbia, Vancouver, Canada.
Hamid TavakoliRespiratory Evaluation Sciences Program, Faculty of Pharmaceutical Sciences, the University of British Columbia, Vancouver, Canada.
Larry LyndCollaboration for Outcomes Research and Evaluation, Faculty of Pharmaceutical Sciences, the University of British Columbia, Vancouver, Canada.
Solmaz Ehteshami-AfsharRespiratory Evaluation Sciences Program, Faculty of Pharmaceutical Sciences, the University of British Columbia, Vancouver, Canada.
Mohsen SadatsafaviCollaboration for Outcomes Research and Evaluation, Faculty of Pharmaceutical Sciences, the University of British Columbia, Vancouver, Canada. msafavi@mail.ubc.ca.ORCID http://orcid.org/0000-0002-0419-7862
University of British Columbia · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe majority of patients with asthma have the mild form of the disease. Whether mild asthma patients receive appropriate asthma medications has not received much attention in the literature. We examined the trends in indicators of controller/reliever balance.

methodsUsing administrative health databases of British Columbia, Canada (2000 to 2013), we created a population-based cohort of adolescents/adults with mild asthma using validated case definition algorithms. Each patient-year of follow-up was assessed based on two markers of inappropriate medication prescription: whether the ratio of controller medications (inhaled corticosteroids [ICS] and leukotriene receptor antagonists [LTRA]) to total asthma-related prescriptions was low (cut-off 0.5 according to previous validation studies), and whether short-acting beta agonists (SABA) were prescribed inappropriately according to previously published criteria that considers SABA in relation to ICS prescriptions. Generalized linear models were used to evaluate trends and to examine the association between patient-, disease-, and healthcare-related factors and medication use.

resultsThe final cohort consisted of 195,941 mild asthma patients (59.5% female; mean age at entry 29.6 years) contributing 1.83 million patient-years. In 48.8% of patient-years, controller medications were suboptimally prescribed, while in 7.2%, SABAs were inappropriately prescribed. There was a modest year-over-year decline in inappropriate SABA prescription (relative change - 1.3%/year, P < 0.001) and controller-to-total-medications (relative change - 0.5%/year, P < 0.001). Among the studied factors, the indices of type and quality of healthcare (namely respirologist consultation and receiving pulmonary function test) had the strongest associations with improvement in controller/reliever balance.

conclusionsLarge number of mild asthma patients continue to be exposed to suboptimal combinations of asthma medications, and it appears there are modifiable factors associated with such phenomenon.

Indexed as

Population SurveillanceSeverity of Illness IndexAdultAnti-Asthmatic AgentsAsthmaBritish ColumbiaCohort StudiesDatabases, FactualFemaleFollow-Up StudiesHumansLongitudinal StudiesMaleYoung AdultAnti-Asthmatic AgentsAsthmaController medicationMild asthmaReliever medicationTrend

Identifiers

PMID30819154
PMCPMC6394061
OpenAlexW2916521895

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.