The Medical Outcome Study Short-Form 36(MOS SF-36) is a short questionnaire with 36 items which measure eight multi-item variables: physical functioning (10 items), social functioning (two items), role limitations due to physical problems(four items), role limitations due to emotional problems (three items), mental health (five items), energy and vitality (four items), pain (two items), and general perception of health (five items). For each variable item scores are coded, summed, and transformed on to a scale from 0 (worst possible health state measured by the questionnaire) to 100 (best possible health state).

The Hospital Anxiety and Depression Scale HADS is a self-rated screening questionnaire detecting mild degrees of anxiety and depression. It consists of 14 questions, seven for anxiety and seven for depression. Scores range from non-cases (0-7 score), borderline cases(8-10 score), definite cases (11-21 score).

The instrument is used to quickly assess the severity of fatigue experienced by cancer patients, as well as its impact on their ability to function over the previous 24 h.The BFI consists of 9 items on a single page. Fatigue and its interference are measured on numeric scales from 0-10. There are three items asking subjects to describe their fatigue now, at its usual level, and at its worst level during the previous 24 hours, using extreme points "no fatigue" and "fatigue as bad as you can imagine." The next six items describe how much fatigue has interfered with aspects of their life during the previous 24 hours. Specifically, these items are general activity, mood, walking ability, normal work (both work outside the home and daily chores), relations with other people, and enjoyment of life. These interference scales range from "0" ("does not interfere") to "10" ("completely in terferes"). The global score for the BFI is calculated as the mean value of these 9 items.