Change in functioning and symptom status as measured by the European Organisation for Research and Treatment of Cancer (EORTC) Quality of Life questionnaire for Cancer Patients (EORTC-QLQ-C30) over 36 months.
The EORTC QLQ-C30 consists of 30 items and measures Health Related Quality of Life as well as presence of symptoms across all cancer types. The QLQ-C30 includes nine multi-item scales:
- 5 functional scales (physical, role, cognitive, emotional, and social)
- 3 symptom scales (fatigue, pain, and nausea and vomiting);
- A global health and quality-of-life scale*
- Several single-item symptom measures
28 Items are ranked 1 to 4. 1 = Not at All, 2 = A little, 3=Quite a bit, 4 = Very Much.
*2 items are ranked 1 to 7. 1=Very Poor, 7 = Excellent.
High score = More symptoms or worse problems
*High Score = Better overall health or Quality of life.