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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Since the introduction of the BODE index a little over a decade ago&#44;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">1</span></a> our perception of patients with chronic obstructive pulmonary disease &#40;COPD&#41; has changed radically&#46; The one-dimensional view of the condition based solely on the forced respiratory volume in the first second has been replaced by a more comprehensive evaluation of the patient&#44; taking into account other domains of the disease &#40;perceptive&#44; nutritional and exercise capacity&#41;&#46; This concept was well received by the scientific community&#44; and both Spanish COPD guidelines &#40;GesEPOC&#41;<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">2</span></a> and <span class="elsevierStyleItalic">Global Initiative for chronic Obstructive Lung Disease</span> &#40;<span class="elsevierStyleItalic">GOLD</span>&#41;<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">3</span></a> recommendations now include a multidimensional assessment of the disease&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">The main contribution of the BODE index lies in its ability to predict mortality in COPD patients&#46;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">1</span></a> Over the past few years&#44; numerous studies have reported other benefits&#44; such as its ability to predict hospitalization&#44; adapt to treatments such as pulmonary rehabilitation and volume reduction surgery&#44;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">4</span></a> and complement the COPD-morbidity TEst &#40;COTE&#41; index for predicting mortality in COPD patients&#46;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">5</span></a></p><p id="par0015" class="elsevierStylePara elsevierViewall">In this edition of <span class="elsevierStyleItalic">Archivos de Bronconeumolog&#237;a</span>&#44; Nonato et al&#46; present new evidence on the relationship of the BODE index with health-related quality of life measured using the disease-specific <span class="elsevierStyleItalic">Saint George&#39;s Respiratory Questionnaire</span> &#40;SGRQ&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">6</span></a> To that end&#44; they studied patients with COPD of varying severity from 2 Latin American cities &#40;Santiago de Chile and Sao Paulo&#41;&#46; Although this aspect has been explored before&#44; as the authors themselves mention&#44; we believe that this study is important for 3 reasons&#46; Firstly&#44; it includes patients with COPD of varying severity&#44; which most previous studies had not considered&#46; Secondly&#44; it shows the findings from 2 Latin American populations&#46; Thirdly&#44; and more importantly in our opinion&#44; it shows the association between quality of life and individual BODE scores&#44; noting that even with a BODE score of 0&#44; quality of life in these patients is already impaired&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">The BODE group itself has previously published similar results based on the patients in their original cohort&#46;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">4</span></a> In that study in 1398 COPD patients&#44; of whom almost 40&#37; were GOLD grades 1 and 2&#44; there was a correlation of 0&#46;58 &#40;<span class="elsevierStyleItalic">p</span>&#60;&#46;001&#41; between the BODE index and the total SGRQ score&#44; and 0&#46;59 &#40;<span class="elsevierStyleItalic">p</span>&#60;&#46;001&#41; between the BODE index and the SGRQ <span class="elsevierStyleItalic">Activity</span> domain&#46; Nonato et al&#46; were able to reproduce these results&#44; albeit with a smaller patient sample&#44; by way of external validation&#46; Similarly&#44; unlike the study by Mar&#237;n et al&#46;&#44;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">4</span></a> dividing the BODE index into individual scores revealed that the quality of life of patients with no multidimensional impairment &#40;BODE 0&#41; is already affected&#44;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">6</span></a> complementing what was already known about quartile-based analysis&#46;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">4</span></a> This suggests that factors other than those assessed by the BODE index can affect the quality of life of our patients&#59; although these are unlikely to have a direct impact on mortality&#44; they must be identified and corrected&#46; Finally&#44; although the SGRQ is a specific questionnaire for COPD&#44; knowing the score of a non-COPD population with similar demographic characteristics to the BODE 0 sub-group &#40;including comorbidities&#41; could illustrate the real impact of COPD on quality of life&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">Similarly&#44; patients in the BODE 0 group reported impaired quality of life in all the domains of the SGRQ&#44; with higher scores in the <span class="elsevierStyleItalic">Activity</span> domain&#46; The findings of Nonato et al&#46; are understandable up to a certain point&#44; as limitations in their ability to carry out activities of daily living is more objective for patients than any perception they may have of their symptoms&#46; It is curious that the scores in the <span class="elsevierStyleItalic">Impact</span> section were not higher&#46; This domain is considered to cover a wide range of psychosocial problems&#44; and correlates in part with respiratory symptoms and exercise capacity&#44;<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">7</span></a> although in both the BODE cohort and this study&#44; the correlation was moderate and slight&#44; respectively&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">Another interesting aspect is the non-linear association between SGRQ scores and the BODE index&#44; similar to that observed between the SGRQ and GOLD spirometric stages&#46;<a class="elsevierStyleCrossRefs" href="#bib0090"><span class="elsevierStyleSup">8&#44;9</span></a> The sharp increase in SGRQ scores in certain index values is also noteworthy&#44; especially in patients with BODE 0 and BODE 1&#46; Interestingly&#44; some of these changes do not correspond to the limits established by the BODE quartiles&#46; The authors&#8217; suggestion that this may be due to periods of adaptation up to a critical point seems reasonable&#46;</p><p id="par0035" class="elsevierStylePara elsevierViewall">The evidence presented by Nonato et al&#46; emphasizes that the quality of life of even our asymptomatic or paucisymptomatic COPD patients is already affected&#44; and this deterioration must be identified in order to try to correct it&#46; We must routinely administer questionnaires that assess the quality of life of all our COPD patients&#44; even those with BODE 0&#46; The use of a questionnaire that is easier to administer than the COPD Assessment Test &#40;CAT&#41;<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">10</span></a> could help make this a part of routine clinical practice&#46;</p></span>"
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Editorial
BODE Index: A Good Quality of Life Marker in Chronic Obstructive Pulmonary Disease Patients
El índice BODE: un buen marcador de calidad de vida en pacientes con enfermedad pulmonar obstructiva crónica
Pablo Sanchez-Salcedo, Juan P. de Torres
Corresponding author
jpdetorres@unav.es

Corresponding author.
Departamento de Neumología, Clínica Universidad de Navarra, Pamplona, Navarra, Spain
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Since the introduction of the BODE index a little over a decade ago&#44;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">1</span></a> our perception of patients with chronic obstructive pulmonary disease &#40;COPD&#41; has changed radically&#46; The one-dimensional view of the condition based solely on the forced respiratory volume in the first second has been replaced by a more comprehensive evaluation of the patient&#44; taking into account other domains of the disease &#40;perceptive&#44; nutritional and exercise capacity&#41;&#46; This concept was well received by the scientific community&#44; and both Spanish COPD guidelines &#40;GesEPOC&#41;<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">2</span></a> and <span class="elsevierStyleItalic">Global Initiative for chronic Obstructive Lung Disease</span> &#40;<span class="elsevierStyleItalic">GOLD</span>&#41;<a class="elsevierStyleCrossRef" href="#bib0065"><span class="elsevierStyleSup">3</span></a> recommendations now include a multidimensional assessment of the disease&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">The main contribution of the BODE index lies in its ability to predict mortality in COPD patients&#46;<a class="elsevierStyleCrossRef" href="#bib0055"><span class="elsevierStyleSup">1</span></a> Over the past few years&#44; numerous studies have reported other benefits&#44; such as its ability to predict hospitalization&#44; adapt to treatments such as pulmonary rehabilitation and volume reduction surgery&#44;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">4</span></a> and complement the COPD-morbidity TEst &#40;COTE&#41; index for predicting mortality in COPD patients&#46;<a class="elsevierStyleCrossRef" href="#bib0075"><span class="elsevierStyleSup">5</span></a></p><p id="par0015" class="elsevierStylePara elsevierViewall">In this edition of <span class="elsevierStyleItalic">Archivos de Bronconeumolog&#237;a</span>&#44; Nonato et al&#46; present new evidence on the relationship of the BODE index with health-related quality of life measured using the disease-specific <span class="elsevierStyleItalic">Saint George&#39;s Respiratory Questionnaire</span> &#40;SGRQ&#41;&#46;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">6</span></a> To that end&#44; they studied patients with COPD of varying severity from 2 Latin American cities &#40;Santiago de Chile and Sao Paulo&#41;&#46; Although this aspect has been explored before&#44; as the authors themselves mention&#44; we believe that this study is important for 3 reasons&#46; Firstly&#44; it includes patients with COPD of varying severity&#44; which most previous studies had not considered&#46; Secondly&#44; it shows the findings from 2 Latin American populations&#46; Thirdly&#44; and more importantly in our opinion&#44; it shows the association between quality of life and individual BODE scores&#44; noting that even with a BODE score of 0&#44; quality of life in these patients is already impaired&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">The BODE group itself has previously published similar results based on the patients in their original cohort&#46;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">4</span></a> In that study in 1398 COPD patients&#44; of whom almost 40&#37; were GOLD grades 1 and 2&#44; there was a correlation of 0&#46;58 &#40;<span class="elsevierStyleItalic">p</span>&#60;&#46;001&#41; between the BODE index and the total SGRQ score&#44; and 0&#46;59 &#40;<span class="elsevierStyleItalic">p</span>&#60;&#46;001&#41; between the BODE index and the SGRQ <span class="elsevierStyleItalic">Activity</span> domain&#46; Nonato et al&#46; were able to reproduce these results&#44; albeit with a smaller patient sample&#44; by way of external validation&#46; Similarly&#44; unlike the study by Mar&#237;n et al&#46;&#44;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">4</span></a> dividing the BODE index into individual scores revealed that the quality of life of patients with no multidimensional impairment &#40;BODE 0&#41; is already affected&#44;<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">6</span></a> complementing what was already known about quartile-based analysis&#46;<a class="elsevierStyleCrossRef" href="#bib0070"><span class="elsevierStyleSup">4</span></a> This suggests that factors other than those assessed by the BODE index can affect the quality of life of our patients&#59; although these are unlikely to have a direct impact on mortality&#44; they must be identified and corrected&#46; Finally&#44; although the SGRQ is a specific questionnaire for COPD&#44; knowing the score of a non-COPD population with similar demographic characteristics to the BODE 0 sub-group &#40;including comorbidities&#41; could illustrate the real impact of COPD on quality of life&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">Similarly&#44; patients in the BODE 0 group reported impaired quality of life in all the domains of the SGRQ&#44; with higher scores in the <span class="elsevierStyleItalic">Activity</span> domain&#46; The findings of Nonato et al&#46; are understandable up to a certain point&#44; as limitations in their ability to carry out activities of daily living is more objective for patients than any perception they may have of their symptoms&#46; It is curious that the scores in the <span class="elsevierStyleItalic">Impact</span> section were not higher&#46; This domain is considered to cover a wide range of psychosocial problems&#44; and correlates in part with respiratory symptoms and exercise capacity&#44;<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">7</span></a> although in both the BODE cohort and this study&#44; the correlation was moderate and slight&#44; respectively&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">Another interesting aspect is the non-linear association between SGRQ scores and the BODE index&#44; similar to that observed between the SGRQ and GOLD spirometric stages&#46;<a class="elsevierStyleCrossRefs" href="#bib0090"><span class="elsevierStyleSup">8&#44;9</span></a> The sharp increase in SGRQ scores in certain index values is also noteworthy&#44; especially in patients with BODE 0 and BODE 1&#46; Interestingly&#44; some of these changes do not correspond to the limits established by the BODE quartiles&#46; The authors&#8217; suggestion that this may be due to periods of adaptation up to a critical point seems reasonable&#46;</p><p id="par0035" class="elsevierStylePara elsevierViewall">The evidence presented by Nonato et al&#46; emphasizes that the quality of life of even our asymptomatic or paucisymptomatic COPD patients is already affected&#44; and this deterioration must be identified in order to try to correct it&#46; We must routinely administer questionnaires that assess the quality of life of all our COPD patients&#44; even those with BODE 0&#46; The use of a questionnaire that is easier to administer than the COPD Assessment Test &#40;CAT&#41;<a class="elsevierStyleCrossRef" href="#bib0100"><span class="elsevierStyleSup">10</span></a> could help make this a part of routine clinical practice&#46;</p></span>"
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ISSN: 15792129
Original language: English
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