TY - JOUR
T1 - Examining the Effects of Age on Health Outcomes of Chronic Obstructive Pulmonary Disease
T2 - Results From the Genetic Epidemiology of Chronic Obstructive Pulmonary Disease Study and Evaluation of Chronic Obstructive Pulmonary Disease Longitudinally to Identify Predictive Surrogate Endpoints Cohorts
AU - Parulekar, Amit D.
AU - Martinez, Carlos
AU - Tsai, Chu Lin
AU - Locantore, Nicholas
AU - Atik, Mustafa
AU - Yohannes, Abebaw M.
AU - Kao, Christina C.
AU - Al-Azzawi, Hassan
AU - Mohsin, Ali
AU - Wise, Robert A.
AU - Foreman, Marilyn G.
AU - Demeo, Dawn L.
AU - Regan, Elizabeth A.
AU - Make, Barry J.
AU - Boriek, Aladin M.
AU - Wiener, Laura E.
AU - Hanania, Nicola A.
N1 - Publisher Copyright:
© 2017 AMDA – The Society for Post-Acute and Long-Term Care Medicine
PY - 2017/12/1
Y1 - 2017/12/1
N2 - Rationale The prevalence of chronic obstructive pulmonary disease (COPD) and its associated comorbidities increase with age. However, little is understood about differences in the disease in patients over 65 years of age compared with younger patients. Objectives To determine disease characteristics of COPD and its impact in older patients compared with younger patients. Methods We examined baseline characteristics of patients with COPD (global obstructive lung disease stage II–IV) in 2 large cohorts: Genetic Epidemiology of COPD Study (COPDGene) and Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints (ECLIPSE). We compared demographics, indices of disease severity, prevalence of comorbidities, exacerbation frequency, and quality of life scores in patients ≥65 years of age vs patients <65 years of age. We also tested for associations of age with disease characteristics and health outcomes. Results In the COPDGene cohort, older patients (n = 1663) had more severe disease as measured by forced expiratory volume in 1 second (1.22 vs 1.52 L, P <.001), use of long-term oxygen therapy (35% vs 22%, P <.001), 6-minute walk distance (355 vs 375 m, P <.001), and radiographic evidence of emphysema (14% vs 8%, P <.001) and air trapping (47% vs 36%, P <.001) and were more likely to have comorbidities compared with younger patients (n = 2027). Similarly, in the ECLIPSE cohort, older patients (n = 1030) had lower forced expiratory volume in 1 second (1.22 vs 1.34 L, P <.001), greater use of long-term oxygen therapy (7% vs 5%, P =.02), shorter 6- minute walk distance (360 vs 389 m, P <.001), and more radiographic evidence of emphysema (17% vs 14%, P =.009) than younger patients (n = 1131). In adjusted analyses of both cohorts, older age was associated with decreased frequency of exacerbations [odds ratio = 0.52, 95% confidence interval (CI) = 0.43–0.64 in COPDGene, odds ratio = 0.79, 95% CI = 0.64–0.99 in ECLIPSE] and a better quality of life (lower St. Georges respiratory questionnaire score) (β = −8.7, 95% CI = −10.0 to −7.4 in COPDGene, β = −4.4, 95% CI = −6.1 to −3.2 in ECLIPSE). Conclusions Despite greater severity of illness, older patients with COPD had better quality of life and reported fewer exacerbations than younger patients. Although this observation needs to be explored further, it may be related to the fact that older patients change their expectations and learn to adapt to their disease.
AB - Rationale The prevalence of chronic obstructive pulmonary disease (COPD) and its associated comorbidities increase with age. However, little is understood about differences in the disease in patients over 65 years of age compared with younger patients. Objectives To determine disease characteristics of COPD and its impact in older patients compared with younger patients. Methods We examined baseline characteristics of patients with COPD (global obstructive lung disease stage II–IV) in 2 large cohorts: Genetic Epidemiology of COPD Study (COPDGene) and Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints (ECLIPSE). We compared demographics, indices of disease severity, prevalence of comorbidities, exacerbation frequency, and quality of life scores in patients ≥65 years of age vs patients <65 years of age. We also tested for associations of age with disease characteristics and health outcomes. Results In the COPDGene cohort, older patients (n = 1663) had more severe disease as measured by forced expiratory volume in 1 second (1.22 vs 1.52 L, P <.001), use of long-term oxygen therapy (35% vs 22%, P <.001), 6-minute walk distance (355 vs 375 m, P <.001), and radiographic evidence of emphysema (14% vs 8%, P <.001) and air trapping (47% vs 36%, P <.001) and were more likely to have comorbidities compared with younger patients (n = 2027). Similarly, in the ECLIPSE cohort, older patients (n = 1030) had lower forced expiratory volume in 1 second (1.22 vs 1.34 L, P <.001), greater use of long-term oxygen therapy (7% vs 5%, P =.02), shorter 6- minute walk distance (360 vs 389 m, P <.001), and more radiographic evidence of emphysema (17% vs 14%, P =.009) than younger patients (n = 1131). In adjusted analyses of both cohorts, older age was associated with decreased frequency of exacerbations [odds ratio = 0.52, 95% confidence interval (CI) = 0.43–0.64 in COPDGene, odds ratio = 0.79, 95% CI = 0.64–0.99 in ECLIPSE] and a better quality of life (lower St. Georges respiratory questionnaire score) (β = −8.7, 95% CI = −10.0 to −7.4 in COPDGene, β = −4.4, 95% CI = −6.1 to −3.2 in ECLIPSE). Conclusions Despite greater severity of illness, older patients with COPD had better quality of life and reported fewer exacerbations than younger patients. Although this observation needs to be explored further, it may be related to the fact that older patients change their expectations and learn to adapt to their disease.
KW - 6-minute walk distance
KW - Elderly
KW - comorbidities
KW - quality of life
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U2 - 10.1016/j.jamda.2017.09.028
DO - 10.1016/j.jamda.2017.09.028
M3 - Article
C2 - 29169736
AN - SCOPUS:85034601496
SN - 1525-8610
VL - 18
SP - 1063
EP - 1068
JO - Journal of the American Medical Directors Association
JF - Journal of the American Medical Directors Association
IS - 12
ER -