Prevalence of Chronic Obstructive Pulmonary Disease (COPD) and Eosinophilia Among Primary Care Patients

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GlaxoSmithKline (GSK)




Pulmonary Disease, Chronic Obstructive


Other: Oximetry
Other: CAT
Procedure: Blood test
Other: Minimal questionnaire
Other: anthropometric measures
Other: Medical interview

Study type


Funder types




Details and patient eligibility


Early diagnosis and appropriate treatment for COPD subjects are both critical to minimize the progression of COPD and improve outcomes. Also, evidence suggests that high eosinophil (specific type of white blood cell that protects body against certain kinds of germs) level is associated with increased risk of both moderate and severe exacerbations in COPD subjects. To date, there is insufficient amount of data that describes the prevalence of COPD in Brazilian primary care units. Thus, this multicenter, cross-sectional study conducted in five centers located in five different Brazilian cities will provide estimation about the prevalence of COPD in primary care and will also determine the levels of eosinophils in subjects with confirmed COPD diagnosis. Approximately 2,500 eligible subjects are expected to be enrolled in the study.

Full description

The study is a cross sectional (prevalence study).


800 patients




35+ years old


No Healthy Volunteers

Inclusion criteria

Adult >= 35 years old

At least one of the following risk factors for COPD:

• being a current smoker (who has smoked 100 cigarettes in his or her lifetime and who currently smokes cigarettes) or past smoker (who has smoked at least 100 cigarettes in his or her lifetime but who had quit smoking at the time of interview); Current or past exposure to biomass smoke, such as wood or coal, for cooking or heating (exposure >=100 hours/year

Capable of giving signed informed consent

Exclusion criteria

  • Physical or mental disability to complete the study procedures
  • Heart above 120 beats per minute
  • Participants under treatment for tuberculosis
  • Participant in current clinical trial
  • Pregnancy
  • Patients with one of the following contraindications to spirometry: chest surgery in the last month; abdominal surgery within the past three months; neuromuscular disease, acute coronary syndrome; retinal detachment; hospitalization for any cardiac problem in the prior 3 months.

Trial design

800 participants in 3 patient groups

Subjects met inclusion with at least one exclusion criteria
Subjects who meet all the inclusion criteria, but have at least one exclusion criteria or not agree to participate in the whole study will be invited to sign a special ICF in order to complete a minimal questionnaire.
Other: anthropometric measures
Other: Minimal questionnaire
Procedure: Blood test
Other: Oximetry
Other: CAT
Subjects who satisfy all inclusion/exclusion criteria
Subjects who satisfy all inclusion/exclusion criteria and agree to sign the ICF, an interview will be conducted for information regarding medical history, sociodemographic and clinical information, including disease history, treatment history, smoking habits and use of biomass.
Other: Medical interview
Other: anthropometric measures
Procedure: Blood test
Other: Oximetry
Other: CAT
Spirometry confirmed COPD Subjects
The spirometry confirmed COPD patients will be requested to complete the COPD Assessment Test (CAT), self-administered questionnaire related to quality of life on COPD patients.
Other: Medical interview
Other: CAT

Trial contacts and locations



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