ACT	Acceptance and Commitment Therapy
COPD	Chronic Obstructive Pulmonary Disease
CPAQ	Chronic Pain Acceptance Questionnaire
CPAQ-8	8-item Chronic Pain Acceptance Questionnaire
HADS	Hospital Anxiety and Depression Scale
HCCQ	Health Care Climate Questionnaire
IPQ	Illness Perception Questionnaire
IPQ-R	Revised Illness Perception Questionnaire
MOS-SSS	Medical Outcomes Study Social Support Survey
PIPS	Psychological Inflexibility in Pain Scale
PRAISE	Pulmonary Rehabilitation Adapted Index of Self-Efficacy
RCT	Randomized Controlled Trial
SEMCD	Self-Efficacy for Managing Chronic Disease
WAI	Working Alliance Inventory