2017
DOI: 10.1080/15412555.2017.1394285
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Abstract: Chronic Obstructive Pulmonary Disease (COPD) is a major cause of morbidity and mortality worldwide. The Global Initiative for Chronic Obstructive Lung Disease (GOLD) project has been working to improve awareness, prevention and management of this disease. The aim of this study is to evaluate how COPD patients are reclassified by the 2017 GOLD system (versus GOLD 2011), to calculate the level of agreement between these two classifications in allocation to categories and to compare the performance of each classi… Show more

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Cited by 68 publications
(45 citation statements)
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“…11 Other studies have compared the GOLD 2017 with the previous GOLD classifications to predict COPD exacerbation. In contrast to our study, three studies 11,12,35 observed that the GOLD 2017 and the GOLD 2011 classifications predicted exacerbation similarly well. The discrepancies might be because these studies did not take exacerbations as time-to-event data when comparing the discrimination ability.…”
Section: Discussioncontrasting
confidence: 99%
“…11 Other studies have compared the GOLD 2017 with the previous GOLD classifications to predict COPD exacerbation. In contrast to our study, three studies 11,12,35 observed that the GOLD 2017 and the GOLD 2011 classifications predicted exacerbation similarly well. The discrepancies might be because these studies did not take exacerbations as time-to-event data when comparing the discrimination ability.…”
Section: Discussioncontrasting
confidence: 99%
“…Approximately half of the patients assigned to group D according to the GOLD 2011 criteria migrated to group B in the GOLD 2017 update. After implementation of the GOLD 2017 guidelines, the lowest proportion of patients would be classified into group C (4.5% of COPD patients), which is similar to results obtained in our study (7.7% of patients in group C according to GOLD 2017) [13]. Moreira et al evaluated the distribution of patients to particular therapeutic groups, depending on the used GOLD 2001-2011-2017 guidelines (Moreira et al, ERS International Congress 2017, Milan).…”
Section: Discussionsupporting
confidence: 89%
“…Interestingly, mild or moderate severity COPD according to the GOLD 2007 guideline would be equally attributed to individual ABCD groups according to both the GOLD 2011 and the GOLD 2017 guidelines. A study performed by Marçôa et al in a group of 200 patients with COPD also showed differences in patients assignment to individual therapeutic groups depending on the GOLD 2011 and 2017 guidelines [13]. All the patients classified to category A or B according to the GOLD 2011 guidelines would remain in these groups after reclassification based on the GOLD 2017 updates, which is a comparable result to that obtained in our study.…”
Section: Discussionsupporting
confidence: 88%
“…[24] Combined with the diagnose criteria for COPD in China, we also considered patients' history of illness, results of X-ray and biochemical examination when participants were diagnosed as COPD. [25] Patients of COPD were de ned as a participant who reported a previous diagnosis of COPD through spirometry testing by physician. Participants were also de ned as COPD patients by self-reporting that they received any inhaled short-acting or long-acting bronchodilator or corticosteroid therapy before.…”
Section: Data Collectionmentioning
confidence: 99%