2.3.3. QoL Questionnaire

The Short Form-36, version 2 (SF-36v2) is an established, reliable, and validated measure of health-related QoL [59]. The questionnaire consists of 36 items with eight subscales (physical functioning, role limitations due to physical problems, general health perceptions, vitality, social functioning, role limitations due to emotional problems, general mental health, health transitions) and two composite domains (physical health (PCS) and mental health (MCS)). A higher score on these scales indicates a higher perceived QoL. A score of 50 on the PCS and MCS is representative of the USA general population norm [59].