Evidence map›Paper›PMID 20363841›Full record

ArticleChest2010

Do symptoms predict COPD in smokers?

Jill A Ohar, Alireza Sadeghnejad, Deborah A Meyers, James F Donohue, Eugene R Bleecker

Open access · bronzeAbstract read
In one paragraph

Article in Chest, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
5.5field-weighted citation impact, top 4% 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

35 citing papers in PubMed, 58 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. FEFInternational journal of chronic obstructive pulmonary disease · 2020
    Article
  8. Article
  9. Article
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  11. Voluntary lung function screening to reveal new COPD cases in southern Italy.International journal of chronic obstructive pulmonary disease · 2017
    Article
  12. Article
  13. Article
  14. Dual therapy strategies for COPD: the scientific rationale for LAMA + LABA.International journal of chronic obstructive pulmonary disease · 2016
    Review
  15. Article
  16. Development of a simple binary response questionnaire to identify airflow obstruction in a smoking population in Argentina.European respiratory review : an official journal of the European Respiratory Society · 2015
    Article
  17. Article
  18. Prevalence of chronic obstructive pulmonary disease in asymptomatic smokers.International journal of chronic obstructive pulmonary disease · 2015
    Article
  19. Article
  20. 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.

Jill A OharWake Forest University School of Medicine, Medical Center Blvd, Winston-Salem, NC 27157, USA. johar@wfubmc.edu
Alireza Sadeghnejad
Deborah A Meyers
James F Donohue
Eugene R Bleecker
Wake Forest University · USUniversity of North Carolina at Chapel Hill · US

Funding

NHLBI NIH HHS HHSN268200900019C
6 · The paper itself

Abstract

backgroundThe US Preventive Services Task Force recommends against spirometry in the absence of symptoms. However, as much as 50% of COPD cases in the United States remain undiagnosed.

methodsReport of symptoms, smoking history, and spirometric data were collected from subjects screened for a work-related medical evaluation (N = 3,955). Prevalence of airflow obstruction and respiratory symptoms were assessed. Sensitivity, specificity, positive and negative predictive values, and relative risks of predicting symptoms and smoking history for COPD were calculated.

resultsForty-four percent of smokers in our sample had airways obstruction (AO). Of these, 36% reported a diagnosis of or treatment for COPD. Odds ratio (95% CI) for AO with smoking (> or = 20 pack-years) was 3.73 (3.12- 4.45), 1.98 (1.73-2.27) for cough, 1.79 (1.55-2.08) for dyspnea, 1.95 (1.70-2.34) for sputum, and 2.59 (2.26-2.97) for wheeze. Respiratory symptoms were reported by 92% of smokers with AO, 86% smokers with restriction, 76% smokers with normal spirometry, and 73% of nonsmokers. Sensitivity (92% vs 90%), specificity (19% vs 22%), positive (47% vs 40%) and negative (75% vs 80%) predictive values for the presence of one or more symptoms were similar between smokers and all subjects.

conclusionsCOPD is underdiagnosed in the United States. Symptoms are frequent in subjects with AO and increase their risk for COPD, but add little beyond age and smoking history to the predictive value of spirometry. In view of the high prevalence of symptoms and their poor predictive value, a simpler and more effective approach would be to screen older smokers.

Indexed as

AgedFemaleHumansLogistic ModelsMaleMiddle AgedPredictive Value of TestsPrevalencePulmonary Disease, Chronic ObstructiveRadiography, ThoracicRespiratory Function TestsRisk FactorsSensitivity and SpecificitySmokingSpirometrySurveys and Questionnaires

Identifiers

PMID20363841
PMCPMC2881631
OpenAlexW2138050338

What OpenQuestion holds

Textmetadata
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.