V-RQOL involves 10 questions, to which quality of life and voice are related, involving the Physical (Questions 1, 2,3,6,7 and 9), Socio-emotional (4,5,8 and 10) and Global (questions from 1 to 10) domains.
Arguably the most important of these physical question concerned clarifying which motion or motions time measures.
" For the physical activity questions, question design issues (as opposed to translation problems) were again common, but appeared to affect all subject groups equally, from both quantitative and qualitative perspectives.
As in the physical activity question, this type of question can have multiple correct answers as well (i.e., a device may be charged multiple times during a day).
More precise information on the type of activity could improve the validity for both the physical activity questions and the questions about physical stressors.
Our intention was to include only those who were inactive (i.e. responded to alternative 1 or 2 in the physical activity question) and overweight/obese.
It assesses the physical (20 questions) and psychological (9 questions) impact of MS, provided as separate scores on a scale of 0 to 100, where lower scores represent better HRQoL [ 19].
Since the Internet mode does not enable viewing questions ahead, we found it necessary to state in the introduction to the physical activity questions in Wave 2 that questions would be asked about both vigorous and moderate activity.
The questions on sedentary behaviors followed the physical activity questions, and were designed to asses typical time spent per day on sedentary activities, including television (TV) viewing, video games, and computer and internet use.
