Measured with European Organization for Research and Treatment of Cancer Quality of Life Core Questionaire (EORTC QLQ-C30). The questionnaire consists of 30 questions assessing general quality of life issues of cancer patients. The EORTC QLQ-C30 includes 5 functional scales, measuring physical, role, emotional, cognitive, and social functioning, three multi-item symptom scales (fatigue, nausea/vomiting, and pain), and six single-item scales. High scores on the functional and global scales represent better quality of life. In contrast, high scores on the symptom scale indicate poor quality of life. Each instrument can reach values from 0-100.

Measured with Brief Pain Inventory (BPI). The BPI gives two scores: a pain severity score and a pain interference score. The pain severity score is calculated from the four items about pain intensity. Each item is rated from 0, no pain, to 10, pain as bad as you can imagine, and contributes with the same weight to the final score, ranging from 0 to 40. The pain interference score consists of seven subitems rated from 0, does not interfere, to 10, completely interferes, and contributes with the same weight to the final score, ranging from 0 to 70.