<qa>  What is the leading cause of disability in the United States?Osteoarthritis OA is the leading cause of disability in the United States. Studies have shown that training patients to cope with pain improves physical and social functioning, increases self-efficacy, and reduces psychological distress. However, this type of training is not available to the vast majority of OA patients. This study will determine the effectiveness of a training program for coping with pain that will be administered in community medical practices. 