<qa>  What is the term for the long assessment?In addition, sometime during this assessment period researchers will ask questions regarding pain interference, depression, anxiety, sleep disturbance, post-traumatic stress disorder PTSD symptoms, medication use, medical services utilization, thoughts about pain and treatment motivation. This latter set of questions will only be asked once during the assessment period, and will be referred to as the long assessment. Research staff will give participants the option to: 1 complete the long assessment during one of the four short telephone assessments described above; or 2 spread the long assessment across several days during the assessment period. The entire long assessment or portions thereof may fall up to two days outside the 7-day period for the four short assessments. 