... variance in functional status and qualityof life associated with COPD is not explained by mea-sures of pulmonary physiology. Psychological factorsmay play in important role in determining the ... measuresPulmonary function tests, including spirometry and sin-gle-breath diffusing capacity (DLCO), were performed in accordance with American Thoracic Society standards[26,27]. Spirometry values used in ... Marvin Pomerantz, MD (Co-Principal Investigator); MaryGilmartin, RN, RRT (Principal Clinic Coordinator); Joyce Canterbury; Martin Carlos;Phyllis Dibbern, PT; Enrique Fernandez, MD; Lisa Geyman,...