Evidence map›Paper›PMID 26861867›Full record

Observational studyBMC pulmonary medicine2016

Risk factors for COPD exacerbations in inhaled medication users: the COPDGene study biannual longitudinal follow-up prospective cohort.

Robert Busch, MeiLan K Han, Russell P Bowler, Mark T Dransfield, J Michael Wells, Elizabeth A Regan, Craig P Hersh, COPDGene Investigators

Registry-linked trialOpen access · goldAbstract readObservational Study
In one paragraph

Observational study in BMC pulmonary medicine, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00608764 (Genetic Epidemiology of Chronic Obstructive Pulmonary Disease), which is not on this map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
3.3field-weighted citation impact, top 8% 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.

NCT00608764 active not recruitingnot on this map

Genetic Epidemiology of Chronic Obstructive Pulmonary Disease (COPDGene)

TypeobservationalSponsorBrigham and Women's HospitalRan2007 to 2028Enrolled10,718ConditionsPulmonary Disease, Chronic Obstructive, Emphysema, Bronchitis, Chronic
3 · Its place in the literature

Who cites it

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. Predictors of Acute Exacerbations in COPD: A Systematic Review.International journal of chronic obstructive pulmonary disease · 2026
    Pooled it
  2. Trial
  3. Determinants of exacerbation risk in patients with COPD in the TIOSPIR study.International journal of chronic obstructive pulmonary disease · 2017
    Trial
  4. Observational
  5. Review
  6. Lack of Clinical Control in COPD Patients Depending on the Target and the Therapeutic Option.International journal of chronic obstructive pulmonary disease · 2023
    Observational
  7. Article
  8. Observational
  9. Article
  10. Review
  11. Article
  12. Bronchiectasis in COPD patients: more than a comorbidity?International journal of chronic obstructive pulmonary disease · 2017
    Review
  13. Initiation of triple therapy maintenance treatment among patients with COPD in the US.International journal of chronic obstructive pulmonary disease · 2017
    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

8 authors at 3 institutions in 1 country.

Robert BuschChanning Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, 181 Longwood Avenue, Boston, MA, 02115, USA. rerbu@channing.harvard.edu.
MeiLan K HanDivision of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, MI, USA. mrking@med.umich.edu.
Russell P BowlerDepartment of Medicine, National Jewish Health, Denver, CO, USA. BowlerR@njhealth.org.
Mark T DransfieldDivision of Pulmonary, Allergy, and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL, USA. mdrans99@uab.edu.
J Michael WellsDivision of Pulmonary, Allergy, and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL, USA. jmwells@uab.edu.
Elizabeth A ReganDepartment of Medicine, National Jewish Health, Denver, CO, USA. regane@njhealth.org.
Craig P HershChanning Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, 181 Longwood Avenue, Boston, MA, 02115, USA. craig.hersh@channing.harvard.edu.
COPDGene Investigators
Brigham and Women's Hospital · USNational Jewish Health · USUniversity of Alabama at Birmingham · US

Funding

Genetic Epidemiology of COPDU01HL089897 · NHLBI · NATIONAL JEWISH HEALTH · PI CRAPO, JAMES D · 2007 to 2021
$56.9M
Pulmonary Toxicology Facility CoreP30ES005605 · NIEHS · UNIVERSITY OF IOWA · PI HANS-JOACHIM LEHMLER · 1990 to 2026
$40.5M
Metabolomic signatures of empysema and COPD progression in the COPDGene cohortR01HL089897 · NHLBI · NATIONAL JEWISH HEALTH · PI CRAPO, JAMES D · 2012 to 2016
$31.1M
Genetic Epidemiology of COPDU01HL089856 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI SILVERMAN, EDWIN K · 2007 to 2021
$20.7M
(2 of 2) Genetic Epidemiology of COPDR01HL089856 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI SILVERMAN, EDWIN K · 2012 to 2016
$18.9M
SYSTEMS APPROACHES TO THE EPIDEMIOLOGY, GENETICS AND GENOMICS OF LUNG DISEASEST32HL007427 · NHLBI · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI DAWN L DEMEO, Edwin K Silverman · 1985 to 2026
$13.6M
Systems Biology, Bioinformatics, and BiostatisticsP01HL105339 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI SILVERMAN, EDWIN K · 2011 to 2015
$12.2M
LONG-TERM OXYGEN TREATMENT TRIAL (LOTT) PHARMACOGENOMICS ANCILLARY STUDYR01HL094635 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI HERSH, CRAIG P · 2009 to 2014
$2.2M
PHARMACOGENOMICS OF INHALED CORTICOSTEROIDS TO REDUCE COPD EXACERBATIONSR01NR013377 · NINR · BRIGHAM AND WOMEN'S HOSPITAL · PI HERSH, CRAIG P · 2011 to 2013
$1.5M
Clinical significance and genetic determinants of novel imaging measures of emphysema distribution in 9,743 smokersK08HL141601 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI EL BOUEIZ, ADEL · 2018 to 2022
$853k
NHLBI NIH HHS K08 HL141601NHLBI NIH HHS P01 HL105339NHLBI NIH HHS P01HL105339NHLBI NIH HHS R01 HL089856NHLBI NIH HHS R01HL089856NHLBI NIH HHS R01 HL089897NHLBI NIH HHS R01HL089897NHLBI NIH HHS R01 HL094635NHLBI NIH HHS R01HL094635NHLBI NIH HHS T32 HL007427NHLBI NIH HHS U01 HL089856NHLBI NIH HHS U01 HL089897NIEHS NIH HHS P30 ES005605NINR NIH HHS R01 NR013377NINR NIH HHS R01NR013377
6 · The paper itself

Abstract

backgroundDespite inhaled medications that decrease exacerbation risk, some COPD patients experience frequent exacerbations. We determined prospective risk factors for exacerbations among subjects in the COPDGene Study taking inhaled medications.

methods2113 COPD subjects were categorized into four medication use patterns: triple therapy with tiotropium (TIO) plus long-acting beta-agonist/inhaled-corticosteroid (ICS ± LABA), tiotropium alone, ICS ± LABA, and short-acting bronchodilators. Self-reported exacerbations were recorded in telephone and web-based longitudinal follow-up surveys. Associations with exacerbations were determined within each medication group using four separate logistic regression models. A head-to-head analysis compared exacerbation risk among subjects using tiotropium vs. ICS ± LABA.

resultsIn separate logistic regression models, the presence of gastroesophageal reflux, female gender, and higher scores on the St. George's Respiratory Questionnaire were significant predictors of exacerbator status within multiple medication groups (reflux: OR 1.62-2.75; female gender: OR 1.53 - OR 1.90; SGRQ: OR 1.02-1.03). Subjects taking either ICS ± LABA or tiotropium had similar baseline characteristics, allowing comparison between these two groups. In the head-to-head comparison, tiotropium users showed a trend towards lower rates of exacerbations (OR = 0.69 [95 % CI 0.45, 1.06], p = 0.09) compared with ICS ± LABA users, especially in subjects without comorbid asthma (OR = 0.56 [95% CI 0.31, 1.00], p = 0.05).

conclusionsEach common COPD medication usage group showed unique risk factor patterns associated with increased risk of exacerbations, which may help clinicians identify subjects at risk. Compared to similar subjects using ICS ± LABA, those taking tiotropium showed a trend towards reduced exacerbation risk, especially in subjects without asthma.

trial registrationClinicalTrials.gov NCT00608764, first received 1/28/2008.

Indexed as

Disease ProgressionAdministration, InhalationAdrenal Cortex HormonesAdrenergic beta-AgonistsAgedAsthmaBronchodilator AgentsCohort StudiesComorbidityDrug Therapy, CombinationFemaleFollow-Up StudiesGastroesophageal RefluxHumansLogistic ModelsLongitudinal StudiesAdrenal Cortex HormonesAdrenergic beta-AgonistsBronchodilator AgentsTiotropium Bromide

Identifiers

PMID26861867
PMCPMC4748594
OpenAlexW2253416243

What OpenQuestion holds

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Registered trials

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.