Correlation of BODE index with quality of life in stable Chronic Obstructive Pulmonary Disease (COPD) patients - A prospective study.

Chronic obstructive pulmonary disease (COPD) is characterized by slow progressive deterioration of respiratory function with systemic effects which have a great impact on health-related quality of life (HRQoL). The severity of airflow limitation in COPD, as reflected by forced expiratory volume in one second (FEV1) does not represent the systemic consequences of COPD. Hence, a multidimensional grading system, BODE index (Body mass index, Airflow obstruction, Dyspnea and Exercise capacity) that assessed both the pulmonary and systemic manifestations has recently been proposed to provide useful prognostic information and predict the outcome in COPD patients. The objective of this study was to evaluate the relationship between BODE index and health-related quality of life (HRQOL) in stable COPD patients and its usefulness in predicting the disease exacerbations. Sixty stable COPD patients who presented in the out-patient departments of Medicine and Pulmonology were recruited over one year period. We evaluated them by body-mass index, forced expiratory volume in one second (FEV1), Modified Medical Research Council dyspnea scale and six minute walk test (6MWT). BODE index was calculated using these variables. Disease duration, number of exacerbations and hospitalization in the previous year were recorded. We also administered the St. George's Respiratory Questionnaire (SGRQ) to assess the health related quality of life (HRQoL) in these patients. BODE scores were categorized into four quartiles, quartile one to four with scores of 0-2, 3-4, 5-6 and 7-10, respectively. According to BODE score, (16) 26.7% of patients were BODE 1, (27) 45% BODE 2, (15) 25% BODE 3 and (2) 3.3% were BODE 4. Higher BODE quartiles were associated with higher total SGRQ scores and SGRQ subscale scores (symptom, activity and impact). Very strong correlations were found between BODE quartiles and total SGRQ scores (P < 0.01). Among the components of BODE index, the decrease in the FEV1 (%predicted) and 6MWD, and the increase of MMRC dyspnea grade were associated with worsening of health status (increase in total SGRQ and SGRQ subscales). BODE index also correlated with the acute exacerbations (P < 0.0012) during one year follow-up. BODE index strongly correlated with the HRQoL and also reliably predicted acute exacerbations in stable COPD patients.

Kamath S ，Kumar A ，Panda SK ，Samanta RP ... -  《-》

Evaluation of correlation of BODE index with health-related quality of life among patients with stable COPD attending a tertiary care hospital.

Sarkar SK ，Basuthakur S ，Das SK ，Das A ，Das S ，Choudhury S ，Datta S ... -  《-》

The cross-sectional and longitudinal association of the BODE index with quality of life in patients with chronic obstructive pulmonary disease.

Lin YX ，Xu WN ，Liang LR ，Pang BS ，Nie XH ，Zhang J ，Wang H ，Liu YX ，Wang DQ ，Xu ZY ，Wang HW ，Zhang HS ，He ZY ，Yang T ，Wang C ... -  《-》

Behavior of Quality of Life (SGRQ) in COPD Patients According to BODE Scores.

To evaluate if the association between the BODE index and deterioration in health-related quality of life is linear. To determine possible associations between the BODE index and health status evaluated by the Saint George's Respiratory Questionnaire (SGRQ) at all levels of disease severity in COPD. A cross-sectional study was carried out on 253 patients from two Latin American respiratory centers (Brazil and Chile) with a clinical diagnosis of COPD, based on GOLD criteria. Assessment included the BODE index and the SGRQ questionnaire. Patients had a BODE index of 3.1±2.0; FEV1 (%) of 49±19.2; BMI (kg/m(2)) of 24.7±5.1; 6MWT distance (meters) of 444±96. Significant correlations were found between the BODE index and SGRQ total scores (r=0.5; <0.001), impact (r=0.45; <0.001) and activity (r=0.5; <0.001). From BODE score zero, HRQOL was already compromised in all SGRQ domains. SGRQ scores (total and domain) increased progressively for individual components of the BODE index, with the decrease in airflow limitation (<0.05), BMI (<0.002) and 6MWT (<0.05), and with the increase in the Modified Medical Research Council (MMRC) score (<0.05). There is an association between health-related quality of life, as assessed by the SGRQ and the BODE index within the entire spectrum of COPD severity. Even in early disease stages and BODE index zero, health-related quality of life is already impaired.

Nonato NL ，Díaz O ，Nascimento OA ，Dreyse J ，Jardim JR ，Lisboa C ... -  《-》

Does the multidimensional grading system (BODE) correspond to differences in health status of patients with COPD?

Ong KC ，Lu SJ ，Soh CS 《-》