QoL Measurement
QoL was measured using the WHOQOL-BREF questionnaire. The researchers were responsible for completing the questionnaires at the rehabilitation center in paper format. The questionnaire has 26 questions, one of which is related to general health and the other to overall QoL. The other 24 questions are related to 4 different domains: physical (7 items), psychological (6 items), social (3 items), and environmental (8 items). Higher scores reflected higher QoL. The WHOQOL-BREF has been translated into several languages, such as Finnish, German, and Japanese [