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Health status deterioration in subjects with mild to moderate airflow obstruction, a six years observational study

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Abstract
BackgroundPatients with COPD need to cope with a disabling disease, which leads to health status impairment.AimTo investigate the long term change of health status in subjects with mild to moderate airflow obstruction and to compare this to subjects without airflow obstruction, with and without a smoking history. Second, to investigate the factors potentially associated to rapid health status decline in our total cohort.MethodsTwo hundred and one subjects were included. Generic [Short form 36 health survey (SF36) and EuroQol - 5 dimensions (EQ-5D)] and disease specific [Clinical COPD questionnaire (CCQ) and COPD Assessment Test (CAT)] health status questionnaires were regularly repeated over a six years period. Other functional outcomes comprised measures of lung function, physical fitness, physical activity and emotional state.ResultsOn average, health status decline did not differ between groups with the exception of the EQ-5D index, which deteriorated faster in subjects with airflow obstruction compared to the never smoking control group [-0.018(0.008) versus 0.00006(0.003), p=0.03]. Subjects presenting at least one exacerbation had faster rate of deterioration measured with CAT [0.91(0.21) versus -0.26(0.25), p<0.01]. Characteristics of the fast declining group were older age, worse lung function, physical fitness, physical activity and disease specific baseline health status. Subjects with airflow obstruction had a 2.5 (95% CI 1.36-4.71) higher risk of presenting fast overall health status decline. Fast overall decline was associated with the presence of acute exacerbation(s) (44% of the subjects with exacerbation(s) versus 17% of subjects without exacerbation, p=0.03). Changes in fat free mass, functional exercise capacity and in symptoms of anxiety and depression correlated weakly to changes in health status measured with all questionnaires.ConclusionSubjects with mild airflow obstruction present a significant deterioration of health status, which is generally not much faster compared to smoking and never smoking controls. Subjects with fast decline in overall health status are older and more likely to have airflow obstruction, acute respiratory exacerbation(s), reduced physical fitness, physical activity and impaired COPD specific health status at baseline.Trial registrationNCT01314807 - retrospectively registered on March 2011.
Keywords
QUALITY-OF-LIFE, CLINICAL COPD QUESTIONNAIRE, PULMONARY-DISEASE, HOSPITAL ANXIETY, RISK-FACTORS, IMPACT, REHABILITATION, EXACERBATIONS, VALIDATION, LIMITATION, Health status, Airflow obstruction, Chronic obstructive pulmonary, disease, Aging, Longitudinal studies

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MLA
Rodrigues, Fernanda Machado, et al. “Health Status Deterioration in Subjects with Mild to Moderate Airflow Obstruction, a Six Years Observational Study.” RESPIRATORY RESEARCH, vol. 20, 2019, doi:10.1186/s12931-019-1061-7.
APA
Rodrigues, F. M., Demeyer, H., Loeckx, M., Hornikx, M., Van Remoortel, H., Janssens, W., & Troosters, T. (2019). Health status deterioration in subjects with mild to moderate airflow obstruction, a six years observational study. RESPIRATORY RESEARCH, 20. https://doi.org/10.1186/s12931-019-1061-7
Chicago author-date
Rodrigues, Fernanda Machado, Heleen Demeyer, Matthias Loeckx, Miek Hornikx, Hans Van Remoortel, Wim Janssens, and Thierry Troosters. 2019. “Health Status Deterioration in Subjects with Mild to Moderate Airflow Obstruction, a Six Years Observational Study.” RESPIRATORY RESEARCH 20. https://doi.org/10.1186/s12931-019-1061-7.
Chicago author-date (all authors)
Rodrigues, Fernanda Machado, Heleen Demeyer, Matthias Loeckx, Miek Hornikx, Hans Van Remoortel, Wim Janssens, and Thierry Troosters. 2019. “Health Status Deterioration in Subjects with Mild to Moderate Airflow Obstruction, a Six Years Observational Study.” RESPIRATORY RESEARCH 20. doi:10.1186/s12931-019-1061-7.
Vancouver
1.
Rodrigues FM, Demeyer H, Loeckx M, Hornikx M, Van Remoortel H, Janssens W, et al. Health status deterioration in subjects with mild to moderate airflow obstruction, a six years observational study. RESPIRATORY RESEARCH. 2019;20.
IEEE
[1]
F. M. Rodrigues et al., “Health status deterioration in subjects with mild to moderate airflow obstruction, a six years observational study,” RESPIRATORY RESEARCH, vol. 20, 2019.
@article{8658264,
  abstract     = {BackgroundPatients with COPD need to cope with a disabling disease, which leads to health status impairment.AimTo investigate the long term change of health status in subjects with mild to moderate airflow obstruction and to compare this to subjects without airflow obstruction, with and without a smoking history. Second, to investigate the factors potentially associated to rapid health status decline in our total cohort.MethodsTwo hundred and one subjects were included. Generic [Short form 36 health survey (SF36) and EuroQol - 5 dimensions (EQ-5D)] and disease specific [Clinical COPD questionnaire (CCQ) and COPD Assessment Test (CAT)] health status questionnaires were regularly repeated over a six years period. Other functional outcomes comprised measures of lung function, physical fitness, physical activity and emotional state.ResultsOn average, health status decline did not differ between groups with the exception of the EQ-5D index, which deteriorated faster in subjects with airflow obstruction compared to the never smoking control group [-0.018(0.008) versus 0.00006(0.003), p=0.03]. Subjects presenting at least one exacerbation had faster rate of deterioration measured with CAT [0.91(0.21) versus -0.26(0.25), p<0.01]. Characteristics of the fast declining group were older age, worse lung function, physical fitness, physical activity and disease specific baseline health status. Subjects with airflow obstruction had a 2.5 (95% CI 1.36-4.71) higher risk of presenting fast overall health status decline. Fast overall decline was associated with the presence of acute exacerbation(s) (44% of the subjects with exacerbation(s) versus 17% of subjects without exacerbation, p=0.03). Changes in fat free mass, functional exercise capacity and in symptoms of anxiety and depression correlated weakly to changes in health status measured with all questionnaires.ConclusionSubjects with mild airflow obstruction present a significant deterioration of health status, which is generally not much faster compared to smoking and never smoking controls. Subjects with fast decline in overall health status are older and more likely to have airflow obstruction, acute respiratory exacerbation(s), reduced physical fitness, physical activity and impaired COPD specific health status at baseline.Trial registrationNCT01314807 - retrospectively registered on March 2011.},
  articleno    = {93},
  author       = {Rodrigues, Fernanda Machado and Demeyer, Heleen and Loeckx, Matthias and Hornikx, Miek and Van Remoortel, Hans and Janssens, Wim and Troosters, Thierry},
  issn         = {1465-993X},
  journal      = {RESPIRATORY RESEARCH},
  keywords     = {QUALITY-OF-LIFE,CLINICAL COPD QUESTIONNAIRE,PULMONARY-DISEASE,HOSPITAL ANXIETY,RISK-FACTORS,IMPACT,REHABILITATION,EXACERBATIONS,VALIDATION,LIMITATION,Health status,Airflow obstruction,Chronic obstructive pulmonary,disease,Aging,Longitudinal studies},
  language     = {eng},
  pages        = {13},
  title        = {Health status deterioration in subjects with mild to moderate airflow obstruction, a six years observational study},
  url          = {http://dx.doi.org/10.1186/s12931-019-1061-7},
  volume       = {20},
  year         = {2019},
}

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