Frequency of comorbidities in chronic obstructive pulmonary disease, and impact on all-cause mortality: A population-based cohort study

Comorbidities and Risk of Mortality in Patients with Chronic Obstructive Pulmonary Disease

Miguel Divo, Claudia Côté, Juan P. de‐Torres et al. · American Journal of Respiratory and Critical Care Medicine · 2012 · 1.3K citations

Medicine, Clinical Sciences, Internal Medicine +17

Depressive Symptoms and Chronic Obstructive Pulmonary Disease

Tze Pin Ng · Archives of Internal Medicine · 2007 · 621 citations

Medicine, Clinical Sciences, Internal Medicine +17

Independent Effect of Depression and Anxiety on Chronic Obstructive Pulmonary Disease Exacerbations and Hospitalizations

Wanning Xu, Jean‐Paul Collet, Stanley H. Shapiro et al. · American Journal of Respiratory and Critical Care Medicine · 2008 · 315 citations

Medicine, Health Sciences, Internal Medicine +17

COPD Surveillance—United States, 1999-2011

Earl S. Ford, Janet B. Croft, David M. Mannino et al. · CHEST Journal · 2013 · 310 citations · Full text

Public Health, Chronic Disease Control, Clinical Epidemiology +16

The prevalence of clinically-relevant comorbid conditions in patients with physician-diagnosed COPD: a cross-sectional study using data from NHANES 1999–2008

Kerry Schnell, Carlos O. Weiss, Todd A. Lee et al. · BMC Pulmonary Medicine · 2012 · 275 citations · Full text

Medicine, Health Sciences, Clinical Epidemiology +16