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• W2031322542 abstract "Background Health-related quality-of-life (HRQL) measures have been correlated with lung function in patients with COPD and interstitial lung disease (ILD). However, different pathophysiologic mechanisms may influence how these distinct diseases affect HRQL, resulting in differing HRQL by pulmonary diagnosis among patients with similar severity of ventilatory impairment. Methods The National Heart, Lung, and Blood Institute Lung Tissue Research Consortium provided data on well-characterized participants with COPD (n = 576) and ILD (n = 405) at four clinical sites. Using multiple linear regression, we examined the effects of FEV1 (% predicted) and diagnosis (ILD vs COPD) on HRQL scores, including total St. George Respiratory Questionnaire (SGRQ) scores and Short Form-12 (SF-12) physical component summary (PCS) and mental component summary (MCS) scores. Results Participants with ILD had, on average, higher SGRQ scores (15.33 points; 95% CI, 12.46-18.19; P <.001) and lower SF-12 PCS scores (− 4.73 points; 95% CI, − 6.31 to − 3.14; P <.001) compared with patients with COPD with similar FEV1 % predicted values, indicating worse HRQL. The specific diagnosis also modified the effect of FEV1 on the total SGRQ score (P = .003) and the SF-12 PCS score (P = .03). There was no relationship between lung function and SF-12 MCS scores. Conclusions HRQL scores were worse for patients with ILD compared with patients with COPD with similar degrees of ventilatory impairment. Differences in dyspnea mechanism or in the rate of disease progression may account for these differences in HRQL. Health-related quality-of-life (HRQL) measures have been correlated with lung function in patients with COPD and interstitial lung disease (ILD). However, different pathophysiologic mechanisms may influence how these distinct diseases affect HRQL, resulting in differing HRQL by pulmonary diagnosis among patients with similar severity of ventilatory impairment. The National Heart, Lung, and Blood Institute Lung Tissue Research Consortium provided data on well-characterized participants with COPD (n = 576) and ILD (n = 405) at four clinical sites. Using multiple linear regression, we examined the effects of FEV1 (% predicted) and diagnosis (ILD vs COPD) on HRQL scores, including total St. George Respiratory Questionnaire (SGRQ) scores and Short Form-12 (SF-12) physical component summary (PCS) and mental component summary (MCS) scores. Participants with ILD had, on average, higher SGRQ scores (15.33 points; 95% CI, 12.46-18.19; P <.001) and lower SF-12 PCS scores (− 4.73 points; 95% CI, − 6.31 to − 3.14; P <.001) compared with patients with COPD with similar FEV1 % predicted values, indicating worse HRQL. The specific diagnosis also modified the effect of FEV1 on the total SGRQ score (P = .003) and the SF-12 PCS score (P = .03). There was no relationship between lung function and SF-12 MCS scores. HRQL scores were worse for patients with ILD compared with patients with COPD with similar degrees of ventilatory impairment. Differences in dyspnea mechanism or in the rate of disease progression may account for these differences in HRQL." @default.
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• W2031322542 date "2012-09-01" @default.
• W2031322542 modified "2023-09-27" @default.
• W2031322542 title "Relationship Between Lung Function Impairment and Health-Related Quality of Life in COPD and Interstitial Lung Disease" @default.
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• W2031322542 doi "https://doi.org/10.1378/chest.11-1332" @default.
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