Observational studyAmerican journal of respiratory and critical care medicine2013

Statin exposure is associated with decreased asthma-related emergency department visits and oral corticosteroid use.

Sze Man Tse, Lingling Li, Melissa G Butler, Vicki Fung, Elyse O Kharbanda, Emma K Larkin, William M Vollmer, Irina Miroshnik, Donna Rusinak, Scott T Weiss and 2 more

Abstract readObservational Study
In one paragraph

Observational study in American journal of respiratory and critical care medicine, 2013. The graph read 2 numbers from its abstract, feeding 1 cell of the map, but none could be read as for or against, so it casts no vote. It also reports 2 associations that do not count as treatment evidence, such as OR 0.64 (0.53 to 0.77) for costs & health-care use. Cited by 35 papers, 2 of them syntheses that pooled it.

2numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 2 pooled it
–field-weighted citation impact
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.

Read, but not usablea number the graph found but could not read as for or against

Costs & health-care usean association or prognostic statement, not a treatment comparison · ckd, dyslipidemiafeeds one cell of the map
OR 0.640.53 to 0.77P < 0.0001
After adjusting for Deyo-Charlson conditions that remained unbalanced after matching, among statin users, statin exposure was associated with decreased odds of having asthma-related emergency department visits (odds ratio [OR], 0.64; 95% confidence interval [CI], 0.53-0.77; P < 0.0001) and two or more oral corticosteroid dispensings (OR, 0.90; 95% CI, 0.81-0.99; P = 0.04).
Costs & health-care usean association or prognostic statement, not a treatment comparison · ckd, dyslipidemiafeeds one cell of the map
OR 0.900.81 to 0.99P = 0.04
After adjusting for Deyo-Charlson conditions that remained unbalanced after matching, among statin users, statin exposure was associated with decreased odds of having asthma-related emergency department visits (odds ratio [OR], 0.64; 95% confidence interval [CI], 0.53-0.77; P < 0.0001) and two or more oral corticosteroid dispensings (OR, 0.90; 95% CI, 0.81-0.99; P = 0.04).

clause the extractor read what became the number

2 · Its place on the map

Where it lands on the map

Rows are treatments, columns are outcomes. The coloured squares are the cells this paper feeds, coloured by the vote it casts there. Click one to jump to what this paper adds to it.

supports the treatmentfavours the comparatorno clear differenceread, but no usable result
3 · What it changes

What it adds to each cell

For every cell the paper feeds: the belief in the claim with and without this paper, and this paper's estimate drawn against every other readable study in the cell. The ringed dot is this paper.

Statins×costs & health-care use

No readable resultOpen on the map →What to test next →

1 readable study in this cell: 0 favour the treatment, 1 find no difference, 0 favour the comparator.

Belief with this paper
0.25no deciding trial · 0 families support, 0 contradict · against placebo
Without itNot a counted family in this claim, so removing it changes nothing.
← favours the treatmentfavours the comparator →
1 · no effect
OR 1.700.99 to 2.77

This paper's own estimate is on a different scale from the rest of the cell, so it is not drawn here.

4 · 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.

5 · Its place in the literature

Who cites it

35 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Statins for asthma.The Cochrane database of systematic reviews · 2020
    Pooled it
  2. Systematic Literature Review of Systemic Corticosteroid Use for Asthma Management.American journal of respiratory and critical care medicine · 2020
    Pooled it
  3. Article
  4. Article
  5. Article
  6. Emerging roles and therapeutic implications of HDAC2 and IL-17A in steroid-resistant asthma.Chinese medical journal pulmonary and critical care medicine · 2023
    Review
  7. Article
  8. Sterols and immune mechanisms in asthma.The Journal of allergy and clinical immunology · 2023
    Review
  9. Article
  10. Sterols in asthma.Trends in immunology · 2022
    Review
  11. Obesity-related asthma in children and adolescents.The Lancet. Child & adolescent health · 2022
    Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Metabolic Dysfunction and Asthma: Current Perspectives.Journal of asthma and allergy · 2020
    Review
  17. Article
  18. Article
  19. Innovations in asthma therapy: is there a role for inhaled statins?Expert review of respiratory medicine · 2018
    Review
  20. Article
6 · The record

Corrections and comments

7 · Who and what money

Authors and funding

12 authors.

Sze Man Tse1 Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
Lingling Li
Melissa G Butler
Vicki Fung
Elyse O Kharbanda
Emma K Larkin
William M Vollmer
Irina Miroshnik
Donna Rusinak
Scott T Weiss
Tracy Lieu
Ann Chen Wu

Funding

The Population-Based Effectiveness in Asthma and Lung Diseases (PEAL) NetworkR01HS019669 · AHRQ · HARVARD PILGRIM HEALTH CARE, INC. · PI SOUMERAI, STEPHEN B · 2010 to 2010
$4.5M
Effectiveness of Pharmacogenetic Testing in AsthmaK08HL088046 · NHLBI · HARVARD PILGRIM HEALTH CARE, INC. · PI WU, ANN CHEN · 2009 to 2013
$645k
AHRQ HHS R01 HS019669NHLBI NIH HHS K08 HL088046NHLBI NIH HHS K08 HL088046-01A2
8 · The paper itself

Abstract

The marked sentences are the ones the graph read a number from.

rationaleStatins, or HMG-CoA reductase inhibitors, may aid in the treatment of asthma through their pleiotropic antiinflammatory effects.

objectivesTo examine the effect of statin therapy on asthma-related exacerbations using a large population-based cohort.

methodsStatin users aged 31 years or greater with asthma were identified from the Population-Based Effectiveness in Asthma and Lung population, which includes data from five health plans. Statin exposure and asthma exacerbations were assessed over a 24-month observation period. Statin users with a statin medication possession ratio greater than or equal to 80% were matched to non-statin users by age, baseline asthma therapy, site of enrollment, season at baseline, and propensity score, which was calculated based on patient demographics and Deyo-Charlson conditions. Asthma exacerbations were defined as two or more oral corticosteroid dispensings, asthma-related emergency department visits, or asthma-related hospitalizations. The association between statin exposure and each of the three outcome measures was assessed using conditional logistic regression. MEASUREMENTS AND MAIN

resultsOf the 14,566 statin users, 8,349 statin users were matched to a nonuser. After adjusting for Deyo-Charlson conditions that remained unbalanced after matching, among statin users, statin exposure was associated with decreased odds of having asthma-related emergency department visits (odds ratio [OR], 0.64; 95% confidence interval [CI], 0.53-0.77; P < 0.0001) and two or more oral corticosteroid dispensings (OR, 0.90; 95% CI, 0.81-0.99; P = 0.04). There were no differences in asthma-related hospitalizations (OR, 0.91; 95% CI, 0.66-1.24; P = 0.52).

conclusionsAmong statin users with asthma, statin exposure was associated with decreased odds of asthma-related emergency department visits and oral corticosteroid dispensings.

Indexed as

Administration, OralAdrenal Cortex HormonesAdultAgedAsthmaCase-Control StudiesCohort StudiesDisease ProgressionEmergency Service, HospitalFemaleHospitalizationHumansHydroxymethylglutaryl-CoA Reductase InhibitorsHyperlipidemiasLogistic ModelsMaleAdrenal Cortex HormonesHydroxymethylglutaryl-CoA Reductase Inhibitors

Identifiers

PMID24093599
PMCPMC3863744

What OpenQuestion holds

Texttitle and abstract
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.