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Fulltext Cough as a key symptom in asthma, allergic rhinitis, COPD and rhinosinusitis and its impact in Asia. [Abstract]

Wang DY, Ghoshal AG, Razak Bin Abdul MA, Lin HC, Thanaviratananich S, Bagga S, et al.

Value Health, 2014 Nov;17(7):A776-7.
PMID: 27202870 DOI: 10.1016/j.jval.2014.08.351

Objectives: Respiratory diseases represent significant impact on health care resources. A cross-sectional, observational study, Asia-Pacific Burden of Respiratory Diseases (APBORD), was conducted to examine burden of disease in adults with respiratory diseases across 6 countries - India, Korea, Malaysia, Singapore, Taiwan, and Thailand. We examined the extent to which cough is a presenting symptom and reason for medical visits for participants with Asthma, Allergic Rhinitis (AR), COPD or Rhinosinusitis.
Methods: Participants aged ≥18 years, presenting to a physician with primary diagnosis of Asthma, AR, COPD or Rhinosinusitis were enrolled. Participants completed a survey which contained questions related to demographics, respiratory symptoms, health care resource use and quality of life.
Results: A total of 13,902 participants were screened, of which 7,030 were eligible and 5,250 enrolled. The highest percentage of participants receiving care for a respiratory disorder had primary diagnosis of AR 14.0%, (95%CI: 13.4%, 14.6%), followed by Asthma 13.5% (12.9%, 14.1%), Rhinosinusitis 5.4% (4.6%, 5.3%) and COPD 4.9%, (5.0%, 5.7%). Cough or coughing up phlegm was reported as symptom by more than half the participants. Cough or coughing up phlegm was reported as the main reason for medical visit by more than 20% of participants. Among all symptoms reported, cough was most frequently reported by participants with a primarydiagnosis of COPD (73%), followed by Asthma (61%), Rhinosinusitis (59%), and AR (47%). In addition, cough was the most frequently reported main reason for seeking medical care among participants with a primary diagnosis of COPD (43%), for Asthma (33%), for Rhinosinusitis (13%), and for AR (11%).
Conclusions: Cough is a prominent symptom and major driver of medical care for patients with Asthma, Allergic Rhinitis, COPD or Rhinosinusitis. These data suggest that patients presenting with cough should be investigated comprehensively for any underlying more serious respiratory disorders to help with appropriate disease management.
Respiratory disease in the Asia-Pacific region: Cough as a key symptom

Cho SH, Lin HC, Ghoshal AG, Bin Abdul Muttalif AR, Thanaviratananich S, Bagga S, et al.

Allergy Asthma Proc, 2016 Mar-Apr;37(2):131-40.
PMID: 26802834 DOI: 10.2500/aap.2016.37.3925

BACKGROUND: Respiratory diseases represent a significant impact on health care. A cross-sectional, multicountry (India, Korea, Malaysia, Singapore, Taiwan, and Thailand) observational study was conducted to investigate the proportion of adult patients who received care for a primary diagnosis of asthma, allergic rhinitis (AR), chronic obstructive pulmonary disease (COPD), or rhinosinusitis.
OBJECTIVE: To determine the proportion of patients who received care for asthma, AR, COPD, and rhinosinusitis, and the frequency and main symptoms reported.
METHODS: Patients ages ≥18 years, who presented to a physician with symptoms that met the diagnostic criteria for a primary diagnosis of asthma, AR, COPD, or rhinosinusitis were enrolled. Patients and physicians completed a survey that contained questions related to demographics and respiratory symptoms.
RESULTS: A total of 13,902 patients with a respiratory disorder were screened, of whom 7030 were eligible and 5250 enrolled. The highest percentage of patients who received care had a primary diagnosis of AR (14.0% [95% confidence interval {CI}, 13.4-14.6%]), followed by asthma (13.5% [95% CI, 12.9-14.1%]), rhinosinusitis (5.4% [95% CI, 4.6-5.3%]), and COPD (4.9% [95% CI, 5.0-5.7%]). Patients with a primary diagnosis of COPD (73%), followed by asthma (61%), rhinosinusitis (59%), and AR (47%) most frequently reported cough as a symptom. Cough was the main reason for seeking medical care among patients with a primary diagnosis of COPD (43%), asthma (33%), rhinosinusitis (13%), and AR (11%).
CONCLUSION: Asthma, AR, COPD, and rhinosinusitis represent a significant proportion of respiratory disorders in patients who presented to health care professionals in the Asia-Pacific region, many with concomitant disease. Cough was a prominent symptom and the major reason for patients with respiratory diseases to seek medical care.
Study site:; 22 sites in six countries (various types of clinics, including primary care)
Quality of Life and Economic Burden of Respiratory Disease in Asia-Pacific-Asia-Pacific Burden of Respiratory Diseases Study

Wang Y, Ghoshal AG, Bin Abdul Muttalif AR, Lin HC, Thanaviratananich S, Bagga S, et al.

Value Health Reg Issues, 2016 May;9:72-77.
PMID: 27881264 DOI: 10.1016/j.vhri.2015.11.004

OBJECTIVES: Asia-Pacific Burden of Respiratory Diseases is a cross-sectional, observational study examining the burden of disease in adults with respiratory diseases across six countries. The aim of this study was to describe health care resource use (HCRU), work impairment, cost burden, and health-related quality of life (HRQOL) associated with respiratory disease in the Asia-Pacific.
METHODS: Consecutive participants aged 18 years or older with a primary diagnosis of asthma, allergic rhinitis, chronic obstructive pulmonary disease, or rhinosinusitis were enrolled. Participants completed a survey detailing respiratory symptoms, HCRU, work productivity and activity impairment, and HRQOL. Locally sourced unit costs for each country were used in the calculation of total costs.
RESULTS: The study enrolled 5250 patients. Overall, the mean annual cost for patients with a respiratory disease was US $4191 (SGD 8489) per patient. For patients who reported impairment at work, the mean annual cost was US $7315 (SGD 10,244), with productivity loss being the highest cost component for all four diseases (US $6310 [SGD 9100]). On average, patients were impaired for one-third of their time at work and 5% of their work time missed because of respiratory disease, which resulted in a 36% reduction in productivity. Patients with a primary diagnosis of chronic obstructive pulmonary disease had the greatest impact on HRQOL.
CONCLUSIONS: In the Asia-Pacific, respiratory diseases have a significant impact on HCRU and associated costs, along with work productivity. Timely and effective management of these diseases has the potential to reduce disease burden and health care costs and improve work productivity and HRQOL.

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