1
|
Tuta-Quintero E, Bastidas AR, Giraldo-Cadavid LF, Echeverri J, Botero JD, Villarreal V, Zambrano C, Rabe V, Hernández J, Tavera D, Acosta J, Martínez Á, Granados C, Nieto M, Román SE, Achry WA, Guezguan-Pérez J, Prieto P, Parra-Cárdenas D. Factors related to mortality in patients with chronic obstructive pulmonary disease in Colombian population. BIOMEDICA : REVISTA DEL INSTITUTO NACIONAL DE SALUD 2024; 44:151-159. [PMID: 39079138 DOI: 10.7705/biomedica.7140] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 05/14/2024] [Indexed: 08/04/2024]
Abstract
Introduction. Data in low- and middle-income countries on mortality and its related risk factors in patients with chronic obstructive pulmonary disease are limited. Objective. To identify the incidence of death and its relationship with variables in a Colombian population during 12 months of follow-up. Materials and methods. We carried out a retrospective study in subjects diagnosed with chronic obstructive pulmonary disease in a third-level hospital in Colombia. Odds ratios were calculated using multivariable logistic regression analysis with the outcome variable “mortality at 12 months”. Results. We included 524 patients, 18.1% (95 / 524) died. The average age was 69.7 (SD = 8.92), and 59.2% (310 / 524) were women. The variables associated with mortality were age (OR = 6.54; 95% CI = 3.65-11.36; p < 0.001), years of exposure to wood smoke (OR = 4.59; 95% CI = 1.64-2.82; p = 0.002), chronic heart failure (OR = 1.81; 95% CI = 1.13-2.91; p = 0.014), cerebrovascular disease (OR = 3.35; 95% CI = 1.04-10.75; p = 0.032), and chronic kidney disease (OR = 6.96; 95% CI = 1.15-41.67; p=0.015). When adjusting the variables in the multivariate analysis, only an association was found for sex (OR = 1.55; 95% CI = 0.95-2.54; p = 0.008) and age (OR = 5.94; 95% CI = 3.3-10.69; p < 0.001). Conclusion. Age, years of exposure to wood smoke, chronic heart failure, and cerebrovascular and chronic kidney disease were the clinical variables associated with a fatal outcome. However, age and sex were the only variables related to mortality when adjusted for confounding factors.
Collapse
Affiliation(s)
| | | | - Luis F Giraldo-Cadavid
- Departamento de Neumología Intervencionista, Fundación Neumológica Colombiana, Bogotá, D.C., Colombia
| | | | - Juan D Botero
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | | | - Camila Zambrano
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | - Valeria Rabe
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | - Juan Hernández
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | - Daniel Tavera
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | - Juan Acosta
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | - Ángela Martínez
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | - Carlos Granados
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | - María Nieto
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | - Sergio E Román
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | - William A Achry
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | | | - Paula Prieto
- Facultad de Medicina, Universidad de La Sabana, Chía, Colombia
| | | |
Collapse
|
2
|
Giezeman M, Sundh J, Athlin Å, Lisspers K, Ställberg B, Janson C, Montgomery S, Kisiel MA, Nager A, Sandelowsky H, Hasselgren M. Comorbid Heart Disease in Patients with COPD is Associated with Increased Hospitalization and Mortality - A 15-Year Follow-Up. Int J Chron Obstruct Pulmon Dis 2023; 18:11-21. [PMID: 36644219 PMCID: PMC9838124 DOI: 10.2147/copd.s378979] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 10/05/2022] [Indexed: 01/10/2023] Open
Abstract
Purpose The aim of this study was to examine the association of comorbid heart disease, defined as chronic heart failure or ischemic heart disease, on all-cause and cause-specific hospitalization and mortality in patients with COPD over a period of nearly 15 years. Materials and Methods The cohort study included patients with COPD from primary and secondary care in 2005 with data from questionnaires and medical record reviews. The Swedish Board of Health and Welfare provided hospitalization and mortality data from 2005 through 2019. Cox regression analyses, adjusted for sex, age, educational level, smoking status, BMI, exacerbations, dyspnea score and comorbid diabetes or hypertension, assessed the association of comorbid heart disease with all-cause and cause-specific time to first hospitalization and death. Linear regression analyses, adjusted for the same variables, assessed this association with hospitalization days per year for those patients that had been hospitalized. Results Of the 1071 patients, 262 (25%) had heart disease at baseline. Cox regression analysis showed a higher risk of hospitalization for patients with heart disease for all-cause (HR (95% CI) 1.55; 1.32-1.82), cardiovascular (2.14; 1.70-2.70) and other causes (1.27; 1.06-1.52). Patients with heart disease also had an increased risk of all-cause (1.77; 1.48-2.12), cardiovascular (3.40; 2.41-4.78) and other (1.50; 1.09-2.06) mortality. Heart disease was significantly associated with more hospitalization days per year of all-cause (regression coefficient 0.37; 95% CI 0.15-0.59), cardiovascular (0.57; 0.27-0.86) and other (0.37; 0.12-0.62) causes. No significant associations were found between heart disease and respiratory causes of hospitalization and death. Conclusion Comorbid heart disease in patients with COPD is associated with an increased risk for all-cause hospitalization and mortality, mainly due to an increase of hospitalization and death of cardiovascular and other causes, but not because of respiratory disease. This finding advocates the need of a strong clinical focus on primary and secondary prevention of cardiovascular disease in patients with COPD.
Collapse
Affiliation(s)
- Maaike Giezeman
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden,Centre for Clinical Research and Education, Karlstad, Sweden,Correspondence: Maaike Giezeman, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden, Email
| | - Josefin Sundh
- Department of Respiratory Medicine, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Åsa Athlin
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Karin Lisspers
- Department of Public Health and Caring Sciences, Family Medicine and Preventive Medicine, Uppsala University, Uppsala, Sweden
| | - Björn Ställberg
- Department of Public Health and Caring Sciences, Family Medicine and Preventive Medicine, Uppsala University, Uppsala, Sweden
| | - Christer Janson
- Department of Medical Sciences, Respiratory, Allergy & Sleep Research, Uppsala University, Uppsala, Sweden
| | - Scott Montgomery
- Clinical Epidemiology and Biostatistics, School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden,Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden,Department of Epidemiology and Public Health, University College London, London, UK
| | - Marta A Kisiel
- Department of Medical Sciences, Occupational and Environmental Medicine, Uppsala University, Uppsala, Sweden
| | - Anna Nager
- Division of Family Medicine and Primary Care, Inst NVS, Karolinska Institutet, Stockholm, Sweden
| | - Hanna Sandelowsky
- Clinical Epidemiology Division, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden,Division of Family Medicine and Primary Care, Inst NVS, Karolinska Institutet, Stockholm, Sweden,Academic Primary Health Care Centre, Region Stockholm, Sweden
| | - Mikael Hasselgren
- School of Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden,Centre for Clinical Research and Education, Karlstad, Sweden
| |
Collapse
|
3
|
Cui Y, Zhan Z, Ma Y, Huang K, Liang C, Mao X, Zhang Y, Ren X, Lei J, Chen Y, Yang T, Wang C. Clinical and economic burden of comorbid coronary artery disease in patients with acute exacerbation of chronic obstructive pulmonary disease: sex differences in a nationwide cohort study. Respir Res 2022; 23:28. [PMID: 35151338 PMCID: PMC8840293 DOI: 10.1186/s12931-022-01945-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Accepted: 02/01/2022] [Indexed: 11/29/2022] Open
Abstract
Background Coronary artery disease (CAD) is a common comorbidity of chronic obstructive pulmonary disease (COPD). However, data related to the impact of CAD on outcomes of acute exacerbation of COPD (AECOPD) are limited and whether the relationship depends on sex remains unknown. Our aim was to determine the impact of comorbid CAD on clinical outcomes among men and women with AECOPD. Methods We used data from the acute exacerbation of chronic obstructive pulmonary disease inpatient registry (ACURE) study, which is a nationwide observational real-world study conducted between September 2017 and February 2020 at 163 centers in patients admitted with AECOPD as their primary diagnosis. Patients were stratified according to the presence or absence of CAD in men and women. The primary outcomes were the length of hospital stay and economic burden during hospitalization. Results Among 3906 patients included in our study, the prevalence of CAD was 17.0%, and it was higher in women than in men (19.5% vs. 16.3%; P = 0.034). Age and other cardiovascular diseases were common factors associated with comorbid CAD in men and women, while body-mass index, cerebrovascular disease, and diabetes were determinants in men and pre-admission use of long-acting beta-adrenoceptor agonist and home oxygen therapy were protective factors in women. Only in men, patients with CAD had a longer length of hospital stay (median 10.0 vs. 9.0 days, P < 0.001), higher total cost during hospitalization (median $1502.2 vs. $1373.4, P < 0.001), and more severe COPD symptoms at day 30 compared to those without CAD. No significant difference was found in women. Comorbid CAD showed no relationship with 30-day readmission or death regardless of sex. In our real-world study, mortality/readmission risk within 30 days increased in patients with previous frequent hospitalizations and poorer pulmonary function. Conclusions In hospitalized AECOPD patients, comorbid CAD was significantly associated with poorer short-term outcomes in men. Clinicians should have heightened attention for men with comorbid CAD to achieve an optimal management of AECOPD patients. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-01945-7.
Collapse
|
4
|
Shen E, Lee JS, Mularski RA, Crawford P, Go AS, Sung SH, Tabada GH, Gould MK, Nguyen HQ. COPD Comorbidity Profiles and 2-Year Trajectory of Acute and Postacute Care Use. Chest 2021; 159:2233-2243. [PMID: 33482176 DOI: 10.1016/j.chest.2021.01.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/06/2021] [Accepted: 01/07/2021] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Multiple morbidity is the norm in advanced COPD and contributes to high symptom burden and worse outcomes. RESEARCH QUESTION Can distinct comorbidity profiles be identified and validated in a community-based sample of patients with COPD from a large integrated health care system using a standard, commonly used diagnostic code-based comorbidity index and downstream 2-year health care use data? STUDY DESIGN AND METHODS In this retrospective cohort study, we used latent class analysis (LCA) to identify comorbidity profiles in a population-based sample of 91,453 patients with a COPD diagnosis between 2011 and 2015. We included specific comorbid conditions from the Charlson Comorbidity Index (CCI) and accounted for variation in underlying prevalence of different comorbidities across the three study sites. Sociodemographic, clinical, and health-care use data were obtained from electronic health records (EHRs). Multivariate logistic regression analysis was used to compare rates of acute and postacute care use by class. RESULTS The mean age was 71 ± 11 years, 55% of patients were women, 23% of patients were people of color, and 80% of patients were former or current smokers. LCA identified four distinct comorbidity profiles with progressively higher CCI scores: low morbidity (61%; 1.9 ± 1.4), metabolic renal (21%; 4.7 ± 1.8), cardiovascular (12%; 4.6 ± 1.9), and multimorbidity (7%; 7.5 ± 1.7). In multivariate models, during 2 years of follow-up, a significant, nonoverlapping increase was found in the odds of having any all-cause acute (hospitalizations, observation stays, and ED visits) and postacute care use across the comorbidity profiles. INTERPRETATION Distinct comorbidity profiles can be identified in patients with COPD using standard EHR-based diagnostic codes, and these profiles are associated with subsequent acute and postacute care use. Population-based risk stratification schemes for end-to-end, comprehensive COPD management should consider integrating comorbidity profiles such as those found in this study.
Collapse
Affiliation(s)
- Ernest Shen
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Janet S Lee
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | | | - Phillip Crawford
- Center for Health Research, Kaiser Permanente Northwest, Portland, OR
| | - Alan S Go
- Division of Research, Kaiser Permanente Northern California, Oakland, CA
| | - Sue H Sung
- Division of Research, Kaiser Permanente Northern California, Oakland, CA
| | - Grace H Tabada
- Division of Research, Kaiser Permanente Northern California, Oakland, CA
| | - Michael K Gould
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
| | - Huong Q Nguyen
- Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA.
| |
Collapse
|
5
|
Axson EL, Ragutheeswaran K, Sundaram V, Bloom CI, Bottle A, Cowie MR, Quint JK. Hospitalisation and mortality in patients with comorbid COPD and heart failure: a systematic review and meta-analysis. Respir Res 2020; 21:54. [PMID: 32059680 PMCID: PMC7023777 DOI: 10.1186/s12931-020-1312-7] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 02/04/2020] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND Discrepancy exists amongst studies investigating the effect of comorbid heart failure (HF) on the morbidity and mortality of chronic obstructive pulmonary disease (COPD) patients. METHODS MEDLINE and Embase were searched using a pre-specified search strategy for studies comparing hospitalisation, rehospitalisation, and mortality of COPD patients with and without HF. Studies must have reported crude and/or adjusted rate ratios, risk ratios, odds ratios (OR), or hazard ratios (HR). RESULTS Twenty-eight publications, reporting 55 effect estimates, were identified that compared COPD patients with HF with those without HF. One study reported on all-cause hospitalisation (1 rate ratio). Two studies reported on COPD-related hospitalisation (1 rate ratio, 2 OR). One study reported on COPD- or cardiovascular-related hospitalisation (4 HR). One study reported on 90-day all-cause rehospitalisation (1 risk ratio). One study reported on 3-year all-cause rehospitalisation (2 HR). Four studies reported on 30-day COPD-related rehospitalisation (1 risk ratio; 5 OR). Two studies reported on 1-year COPD-related rehospitalisation (1 risk ratio; 1 HR). One study reported on 3-year COPD-related rehospitalisation (2 HR). Eighteen studies reported on all-cause mortality (1 risk ratio; 4 OR; 24 HR). Five studies reported on all-cause inpatient mortality (1 risk ratio; 4 OR). Meta-analyses of hospitalisation and rehospitalisation were not possible due to insufficient data for all individual effect measures. Meta-analysis of studies requiring spirometry for the diagnosis of COPD found that risk of all-cause mortality was 1.61 (pooled HR; 95%CI: 1.38, 1.83) higher in patients with HF than in those without HF. CONCLUSIONS In this systematic review, we investigated the effect of HF comorbidity on hospitalisation and mortality of COPD patients. There is substantial evidence that HF comorbidity increases COPD-related rehospitalisation and all-cause mortality of COPD patients. The effect of HF comorbidity may differ depending on COPD phenotype, HF type, or HF severity and should be the topic of future research.
Collapse
Affiliation(s)
- Eleanor L Axson
- National Heart and Lung Institute, Imperial College London, G05 Emmanuel Kaye Building, Manresa Road, London, SW3 6LR, UK.
| | - Kishan Ragutheeswaran
- National Heart and Lung Institute, Imperial College London, G05 Emmanuel Kaye Building, Manresa Road, London, SW3 6LR, UK
| | - Varun Sundaram
- National Heart and Lung Institute, Imperial College London, G05 Emmanuel Kaye Building, Manresa Road, London, SW3 6LR, UK
| | - Chloe I Bloom
- National Heart and Lung Institute, Imperial College London, G05 Emmanuel Kaye Building, Manresa Road, London, SW3 6LR, UK
| | - Alex Bottle
- Dr Foster Unit, Department of Primary Care and Public Health, Imperial College London, London, UK
| | - Martin R Cowie
- National Heart and Lung Institute, Imperial College London, G05 Emmanuel Kaye Building, Manresa Road, London, SW3 6LR, UK
| | - Jennifer K Quint
- National Heart and Lung Institute, Imperial College London, G05 Emmanuel Kaye Building, Manresa Road, London, SW3 6LR, UK
| |
Collapse
|
6
|
Hogea SP, Tudorache E, Fildan AP, Fira-Mladinescu O, Marc M, Oancea C. Risk factors of chronic obstructive pulmonary disease exacerbations. CLINICAL RESPIRATORY JOURNAL 2020; 14:183-197. [PMID: 31814260 DOI: 10.1111/crj.13129] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Revised: 11/07/2019] [Accepted: 12/03/2019] [Indexed: 12/13/2022]
Abstract
Chronic Obstructive Pulmonary Disease (COPD) is a chronic respiratory disease characterised by persistent respiratory symptoms and airflow limitation. COPD has a major impact on public health, mainly because of its increasing prevalence, morbidity and mortality. The natural course of COPD is aggravated by episodes of respiratory symptom worsening termed exacerbations that contribute to disease progression. Acute Exacerbations of COPD (AECOPD) can be triggered by a multitude of different factors, including respiratory tract infections, various exposures, prior exacerbations, non-adherence to treatment and associated comorbidities. AECOPD are associated with an inexorable decline of lung function and a significantly worse survival outcome. This review will summarise the most important aspects regarding the impact of different factors that contribute to COPD exacerbations.
Collapse
Affiliation(s)
- Stanca-Patricia Hogea
- Department of Pulmonology, University of Medicine and Pharmacy "Victor Babeș", Timișoara, Romania
| | - Emanuela Tudorache
- Department of Pulmonology, University of Medicine and Pharmacy "Victor Babeș", Timișoara, Romania
| | - Ariadna Petronela Fildan
- Internal Medicine Discipline, Medical Clinical Disciplines I, "Ovidius" University of Constanta Faculty of Medicine, Constanta, Romania
| | - Ovidiu Fira-Mladinescu
- Department of Pulmonology, University of Medicine and Pharmacy "Victor Babeș", Timișoara, Romania
| | - Monica Marc
- Department of Pulmonology, University of Medicine and Pharmacy "Victor Babeș", Timișoara, Romania
| | - Cristian Oancea
- Department of Pulmonology, University of Medicine and Pharmacy "Victor Babeș", Timișoara, Romania
| |
Collapse
|
7
|
Rethinking Chronic Obstructive Pulmonary Disease. Chronic Pulmonary Insufficiency and Combined Cardiopulmonary Insufficiency. Ann Am Thorac Soc 2019; 15:S30-S34. [PMID: 29461894 DOI: 10.1513/annalsats.201708-667kv] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Almost 70 years ago, Drs. Baldwin, Cournand, and Richards defined chronic pulmonary insufficiency by the presence of respiratory symptoms, radiologic evidence of pulmonary emphysema on chest radiography, and physiologic gas trapping. A decade later, airflow obstruction on spirometry was added to the definition and insufficiency became a disease. Contemporary studies are reviving the diagnostic approach described by these early luminaries, with researchers finding that symptomatic smokers with preserved spirometry have increased exacerbations and that smokers and non-smokers with normal spirometry but emphysema on chest computed tomography have increased mortality. Hence, the Baldwin-Cournand-Richards concept of disease defined by respiratory symptoms, radiologic findings, and physiology-regardless of spirometric criteria-is being rediscovered. Baldwin, Cournand, and Richards also stated that "functionally, it is obvious that the pulmonary and circulatory apparatus are one unit," and they defined combined cardiopulmonary insufficiency as chronic pulmonary insufficiency with (left or right) cardiac and pulmonary artery enlargement. They appreciated the complexity of these interactions, which include the potential role of gas trapping in heart failure with reduced ejection fraction; the impact of emphysema on blood flow in heart failure with preserved ejection fraction; multiple contributions to cor pulmonale with increased pulmonary artery pressure; and cor pulmonale parvus in emphysema; all of which may be amenable to specific therapeutic interventions. Given the complexity of heart-lung interactions originally identified by Baldwin, Cournand, and Richards and the potentially large therapeutic opportunities, large-scale studies are still warranted to find specific therapies for subphenotypes of combined cardiopulmonary insufficiency.
Collapse
|
8
|
Yii ACA, Loh CH, Tiew PY, Xu H, Taha AAM, Koh J, Tan J, Lapperre TS, Anzueto A, Tee AKH. A clinical prediction model for hospitalized COPD exacerbations based on "treatable traits". Int J Chron Obstruct Pulmon Dis 2019; 14:719-728. [PMID: 30988606 PMCID: PMC6443227 DOI: 10.2147/copd.s194922] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Background Assessing risk of future exacerbations is an important component in COPD management. History of exacerbation is a strong and independent predictor of future exacerbations, and the criterion of ≥2 nonhospitalized or ≥1 hospitalized exacerbation is often used to identify high-risk patients in whom therapy should be intensified. However, other factors or "treatable traits" also contribute to risk of exacerbation. Objective The objective of the study was to develop and externally validate a novel clinical prediction model for risk of hospitalized COPD exacerbations based on both exacerbation history and treatable traits. Patients and methods A total of 237 patients from the COPD Registry of Changi General Hospital, Singapore, aged 75±9 years and with mean post-bronchodilator FEV1 60%±20% predicted, formed the derivation cohort. Hospitalized exacerbation rate was modeled using zero-inflated negative binomial regression. Calibration was assessed by graphically comparing the agreement between predicted and observed annual hospitalized exacerbation rates. Predictive (discriminative) accuracy of the model for identifying high-risk patients (defined as experiencing ≥1 hospitalized exacerbations) was assessed with area under the curve (AUC) and receiver operating characteristics analyses, and compared to other existing risk indices. We externally validated the prediction model using a multicenter dataset comprising 419 COPD patients. Results The final model included hospitalized exacerbation rate in the previous year, history of acute invasive/noninvasive ventilation, coronary artery disease, bronchiectasis, and sputum nontuberculous mycobacteria isolation. There was excellent agreement between predicted and observed annual hospitalized exacerbation rates. AUC was 0.789 indicating good discriminative accuracy, and was significantly higher than the AUC of the Global Initiative for Chronic Obstructive Lung Disease (GOLD) risk assessment criterion (history of ≥1 hospitalized exacerbation in the previous year) and the age, dyspnea, and obstruction index. When applied to the independent multicenter validation cohort, the model was well-calibrated and discrimination was good. Conclusion We have derived and externally validated a novel risk prediction model for COPD hospitalizations which outperforms several other risk indices. Our model incorporates several treatable traits which can be targeted for intervention to reduce risk of future hospitalized exacerbations.
Collapse
Affiliation(s)
- Anthony C A Yii
- Department of Respiratory and Critical Care Medicine, Changi General Hospital, Singapore,
| | - C H Loh
- Department of Respiratory and Critical Care Medicine, Changi General Hospital, Singapore,
| | - P Y Tiew
- Department of Respiratory and Critical Care Medicine, Singapore General Hospital, Singapore
- Translational Respiratory Research Laboratory, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore
| | - Huiying Xu
- Department of Respiratory and Critical Care Medicine, Tan Tock Seng Hospital, Singapore
| | - Aza A M Taha
- Department of Respiratory and Critical Care Medicine, Changi General Hospital, Singapore,
| | - Jansen Koh
- Department of Respiratory and Critical Care Medicine, Changi General Hospital, Singapore,
| | - Jessica Tan
- Department of General Medicine, Sengkang General Hospital, Singapore
| | - Therese S Lapperre
- Department of Respiratory Medicine, Bispebjerg and Frederiksberg Hospital, Copenhagen, Denmark
- Duke-National University of Singapore Medical School, Singapore
| | - Antonio Anzueto
- Division of Pulmonary Diseases and Critical Care Medicine, Department of Medicine, UT Health Science Center, San Antonio, TX, USA
| | - Augustine K H Tee
- Department of Respiratory and Critical Care Medicine, Changi General Hospital, Singapore,
| |
Collapse
|
9
|
Ishii T, Nishimura M, Akimoto A, James MH, Jones P. Understanding low COPD exacerbation rates in Japan: a review and comparison with other countries. Int J Chron Obstruct Pulmon Dis 2018; 13:3459-3471. [PMID: 30464435 PMCID: PMC6208549 DOI: 10.2147/copd.s165187] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
COPD is associated with significant morbidity and is one of the leading causes of death worldwide. Periods of exacerbation, the acute worsening of symptoms, are interspersed throughout the disease's natural history and can result in increased treatment burden and hospitalization for patients with COPD. The frequency of exacerbations varies between countries, with both epidemiological studies and randomized controlled trials (RCTs) showing significant differences in observed prevalence rates. Differences in study design and the healthcare setting are likely to contribute to differences in exacerbation frequency, however the perceived rate of exacerbations in Japan is currently lower then the rest of the world. This review identified nine cohort studies and five RCTs that reported COPD annual exacerbation rates in Japan in the ranges of 0.1-2.1 and 0.33-1.79, respectively. The difference in exacerbation rate between studies appeared greater than the difference between Japan and Western countries, likely because of disparities between settings, design, and inclusion criteria. Of these, only one (Understanding the Long-Term Impacts of Tiotropium) had uniform inclusion criteria across different regions. This study found that the annual rate of exacerbation events per patient in Japan was 0.61, compared with 0.85 worldwide in the placebo groups. This review summarizes the published rates of COPD exacerbations in Japan and the rest of the world and explores the hypotheses as to why rates in Japan might be lower than other countries. These include access to medical care, variance in the associated morbidity profile, environmental factors, diagnostic crossover with related diseases, and differences in study design (including the underreporting of COPD exacerbations in Japan). Understanding the reasons why COPD exacerbation rates appear lower in Japan could help clinicians to recognize and modify treatment behaviors, which may lead to improved patient outcomes in all populations.
Collapse
Affiliation(s)
- Takeo Ishii
- Respiratory Medical Affairs, Development and Medical Affairs, GSK K.K., Tokyo, Japan
- Graduate School of Medicine, Nippon Medical School, Tokyo, Japan
| | - Masaharu Nishimura
- Department of Respiratory Medicine, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Asako Akimoto
- Respiratory Medical Affairs, Development and Medical Affairs, GSK K.K., Tokyo, Japan
| | - Mark H James
- Respiratory Franchise (omit Medical), GlaxoSmithKline, Brentford, Middlesex, UK,
| | - Paul Jones
- Respiratory Franchise (omit Medical), GlaxoSmithKline, Brentford, Middlesex, UK,
- Institute of Infection and Immunity, St George's, University of London, London, UK,
| |
Collapse
|