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1.
Chron Respir Dis ; 20: 14799731231183445, 2023.
Article in English | MEDLINE | ID: mdl-37933757

ABSTRACT

RESULTS: 59 patients were included (61% with COPD and 39% with ILD). BPNES factor scores were not significantly different between raters' assessments (p > 0.05). The internal consistency was 0.70 for autonomy, 0.76 for competence, and 0.80 for relatedness. Inter-rater and test-retest reliability were good to very good for autonomy (ICC = 0.78, 95%CI 0.62-0.87; ICC = 0.75, 95%CI 0.57-0.86, respectively), competence (ICC = 0.81, 95%CI 0.68-0.89; ICC = 0.65, 95%CI 0.43-0.80, respectively), and relatedness (ICC = 0.79, 95%CI 0.65-0.88; ICC = 0.70, 95%CI 0.50-0.83, respectively). Significant correlations were observed between BPNES factors and quality of life, anxiety, depression, and functional status. In conclusion, this study confirmed the reliability and construct validity of the Brazilian Portuguese version of the BPNES in patients with COPD and ILD.


Subject(s)
Cross-Cultural Comparison , Pulmonary Disease, Chronic Obstructive , Humans , Surveys and Questionnaires , Brazil , Reproducibility of Results , Quality of Life , Psychometrics
2.
Respir Care ; 68(11): 1546-1552, 2023 11.
Article in English | MEDLINE | ID: mdl-37311628

ABSTRACT

BACKGROUND: The 20-m 6-min-walk test (6MWT20) is a valid, reliable alternative for functional capacity assessment; however, its responsiveness and minimally important difference (MID) have yet to be investigated. The aim of this study was to assess the responsiveness and MID of the 6MWT20 in individuals with COPD. METHODS: Fifty-three subjects completed the study from August 2011-March 2020. The following were assessed: lung function, activities of daily living (ADLs), functional capacity 6MWT20, dyspnea, health status, quality of life, and limitations in ADLs. The primary outcome was the 6MWT20 distance. RESULTS: The study demonstrated that the 6MWT20 is responsive to pulmonary rehabilitation (PR), with an average improvement of 39 ± 36.3 m (P < .001) and an effect size of 1.07. The learning effect declined to 1.45% after PR, with an intraclass correlation coefficient of 0.99 (95% CI 0.98-0.99). The receiver operating characteristic curve indicated a cutoff point of 20 m for the MID of the 6MWT20 based on the MIDs for the modified St George Respiratory Questionnaire (sensitivity 87%, specificity 69%, area under the curve 0.80 [95% CI 0.66-0.90], P < .001, Youden index 0.56) and the number of steps (sensitivity 92%, specificity 73%, area under the curve 0.83 [95% CI 0.70-0.92], P < .01, Youden index 0.56). CONCLUSIONS: The 6MWT20 is responsive to PR, and the MID for the test is 20 m (17-47 m).


Subject(s)
Pulmonary Disease, Chronic Obstructive , Humans , Walk Test , Activities of Daily Living , Quality of Life , Dyspnea/etiology , Exercise Tolerance
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