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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)
Practice patterns for chronic respiratory diseases in the Asia-Pacific region: a cross-sectional observational study

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

Int Arch Allergy Immunol, 2018;177(1):69-79.
PMID: 29874659 DOI: 10.1159/000489015

BACKGROUND: Allergic rhinitis (AR), asthma, chronic obstructive pulmonary disease (COPD), and rhinosinusitis are common and little studied in the Asia-Pacific region.

OBJECTIVES: We sought to investigate real-world practice patterns for these respiratory diseases in India, Korea, Malaysia, Singapore, Taiwan, and Thailand.

METHODS: This cross-sectional observational study enrolled adults (age ≥18 years) presenting to general practitioners (GP) or specialists for physician-diagnosed AR, asthma, COPD, or rhinosinusitis. Physicians and patients completed study-specific surveys at one visit, recording patient characteristics, health-related quality of life (QoL), work impairment, and healthcare resource use. Findings by country and physician category (GP or specialist) were summarized.

RESULTS: Of the 13,902 patients screened, 7,243 (52%) presented with AR (18%), asthma (18%), COPD (7%), or rhinosinusitis (9%); 5,250 of the 7,243 (72%) patients were eligible for this study. Most eligible patients (70-100%) in India, Korea, Malaysia, and Singapore attended GP, while most (83-85%) in Taiwan and Thailand attended specialists. From 42% (rhinosinusitis) to 67% (AR) of new diagnoses were made by GP. On average, patients with COPD reported the worst health-related QoL, particularly to GP. Median losses of work productivity for each condition and activity impairment, except for asthma, were numerically greater for patients presenting to GP vs. specialists. GP prescribed more antibiotics for AR and asthma, and fewer intranasal corticosteroids for AR, than specialists (p < 0.001 for all comparisons).

CONCLUSIONS: Our findings, albeit mostly descriptive and influenced by between-country differences, suggest that practice patterns differ between physician types, and the disease burden may be substantial for patients presenting in general practice.
Burden of respiratory disease in Thailand: Results from the APBORD observational study

Thanaviratananich S, Cho SH, Ghoshal AG, Abdul Muttalif AR, Lin HC, Pothirat C, et al.

Medicine (Baltimore), 2016 Jul;95(28):e4090.
PMID: 27755477

Asia-Pacific Burden of Respiratory Diseases (APBORD) was a cross-sectional, observational study examining the burden of respiratory disease in adults across 6 Asia-Pacific countries.This article reports symptoms, healthcare resource utilization (HCRU), work impairment and cost burden associated with allergic rhinitis (AR), asthma, chronic obstructive pulmonary disease (COPD), and rhinosinusitis in Thailand.Consecutive participants aged ≥18 years with a primary diagnosis of AR, asthma, COPD, or rhinosinusitis were enrolled at 4 hospitals in Thailand during October 2012 and October 2013. Participants completed a survey detailing respiratory symptoms, HCRU, work productivity, and activity impairment. Locally sourced unit costs were used in the calculation of total costs.The study enrolled 1000 patients. The most frequent primary diagnosis was AR (44.2%), followed by rhinosinusitis (24.1%), asthma (23.7%), and COPD (8.0%). Overall, 316 (31.6%) of patients were diagnosed with some combination of the 4 diseases. Blocked nose or congestion (17%) and cough or coughing up phlegm (16%) were the main reasons for the current medical visit. The mean annual cost for patients with a respiratory disease was US$1495 (SD 3133) per patient. Costs associated with work productivity loss were the principal contributor for AR and rhinosinusitis patients while medication costs were the highest contributor for asthma and COPD patients.The study findings highlight the burden associated with 4 prevalent respiratory diseases in Thailand. Thorough investigation of concomitant conditions and improved disease management may help to reduce the burden of these respiratory diseases.
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.
Fulltext Respiratory diseases and the impact of cough in Taiwan: Results from the APBORD observational study

Lin HC, Cho SH, Ghoshal AG, Muttalif ARBA, Thanaviratananich S, Bagga S, et al.

Medicine (Baltimore), 2016 Jul;95(27):e3854.
PMID: 27399064 DOI: 10.1097/MD.0000000000003854

Chronic respiratory diseases such as asthma, allergic rhinitis (AR), chronic obstructive pulmonary disease (COPD), and rhinosinusitis are becoming increasingly prevalent in the Asia-Pacific region. The Asia-Pacific Burden of Respiratory Diseases (APBORD) study was a cross-sectional, observational study which examined the disease and economic burden of AR, asthma, COPD, and rhinosinusitis across Asia-Pacific using 1 standard protocol. Here we report symptoms, healthcare resource use (HCRU), work impairment, and associated cost in Taiwan.Consecutive participants aged ≥ 18 years presenting to a physician with symptoms meeting the diagnostic criteria for a primary diagnosis of asthma, AR, COPD, or rhinosinusitis were enrolled. Participants and their treating physician completed surveys detailing respiratory symptoms, HCRU, work productivity, and activity impairment. Costs including direct medical costs and indirect costs associated with lost work productivity were calculated.The study enrolled 1001 patients. AR was the most frequent primary diagnosis (31.2%). A quarter of patients presented with a combination of respiratory diseases, with AR and asthma being the most frequent combination (14.1%). Cough or coughing up phlegm was the primary reason for the medical visit for patients with asthma and COPD, whereas nasal symptoms (watery runny nose, blocked nose, and congestion) were the primary reasons for AR and rhinosinusitis. Specialists were the most frequently used healthcare resource by patients with AR (26.1%), asthma (26.4%), COPD (26.6%), and rhinosinusitis (47.3%). The mean annual cost per patient with a respiratory disease was US$4511 (SD 5395). The cost was almost double for employed patients (US$8047, SD 6175), with the majority attributable to lost productivity.Respiratory diseases have a significant impact on disease burden in Taiwan. Treatment strategies that prevent lost work productivity could greatly reduce the economic burden of these diseases.
Fulltext Burden of respiratory disease in Thailand: Results from the APBORD observational study

Thanaviratananich S, Cho SH, Ghoshal AG, Muttalif ARBA, Lin HC, Pothirat C, et al.

Medicine (Baltimore), 2016 Jul;95(28):e4090.
PMID: 27428193 DOI: 10.1097/MD.0000000000004090

Asia-Pacific Burden of Respiratory Diseases (APBORD) was a cross-sectional, observational study examining the burden of respiratory disease in adults across 6 Asia-Pacific countries.This article reports symptoms, healthcare resource utilization (HCRU), work impairment and cost burden associated with allergic rhinitis (AR), asthma, chronic obstructive pulmonary disease (COPD), and rhinosinusitis in Thailand.Consecutive participants aged ≥18 years with a primary diagnosis of AR, asthma, COPD, or rhinosinusitis were enrolled at 4 hospitals in Thailand during October 2012 and October 2013. Participants completed a survey detailing respiratory symptoms, HCRU, work productivity, and activity impairment. Locally sourced unit costs were used in the calculation of total costs.The study enrolled 1000 patients. The most frequent primary diagnosis was AR (44.2%), followed by rhinosinusitis (24.1%), asthma (23.7%), and COPD (8.0%). Overall, 316 (31.6%) of patients were diagnosed with some combination of the 4 diseases. Blocked nose or congestion (17%) and cough or coughing up phlegm (16%) were the main reasons for the current medical visit. The mean annual cost for patients with a respiratory disease was US$1495 (SD 3133) per patient. Costs associated with work productivity loss were the principal contributor for AR and rhinosinusitis patients while medication costs were the highest contributor for asthma and COPD patients.The study findings highlight the burden associated with 4 prevalent respiratory diseases in Thailand. Thorough investigation of concomitant conditions and improved disease management may help to reduce the burden of these respiratory diseases.
Fulltext Burden of Respiratory Disease in Korea: An Observational Study on Allergic Rhinitis, Asthma, COPD, and Rhinosinusitis

Yoo KH, Ahn HR, Park JK, Kim JW, Nam GH, Hong SK, et al.

Allergy Asthma Immunol Res, 2016 Nov;8(6):527-34.
PMID: 27582404 DOI: 10.4168/aair.2016.8.6.527

PURPOSE: The Asia-Pacific Burden of Respiratory Diseases (APBORD) study is a cross-sectional, observational one which has used a standard protocol to examine the disease and economic burden of allergic rhinitis (AR), asthma, chronic obstructive pulmonary disorder (COPD), and rhinosinusitis across the Asia-Pacific region. Here, we report on symptoms, healthcare resource use, work impairment, and associated costs in Korea.
METHODS: Consecutive participants aged ≥18 years with a primary diagnosis of asthma, AR, COPD, or rhinosinusitis were enrolled. Participants and their treating physician completed a survey detailing respiratory symptoms, healthcare resource use, and work productivity and activity impairment. Costs included direct medical cost and indirect cost associated with lost work productivity.
RESULTS: The study enrolled 999 patients. Patients were often diagnosed with multiple respiratory disorders (42.8%), with asthma/AR and AR/rhinosinusitis the most frequently diagnosed combinations. Cough or coughing up phlegm was the primary reason for the medical visit in patients with a primary diagnosis of asthma and COPD, whereas nasal symptoms (watery runny nose, blocked nose, and congestion) were the main reasons in those with AR and rhinosinusitis. The mean annual cost for patients with a respiratory disease was US$8,853 (SD 11,245) per patient. Lost productivity due to presenteeism was the biggest contributor to costs.
CONCLUSIONS: Respiratory disease has a significant impact on disease burden in Korea. Treatment strategies for preventing lost work productivity could greatly reduce the economic burden of respiratory disease.