Questions about the presence of chronic illness(es) are asked, along with their duration.

Calculated with the standard formula (weight/height²)

Measured with the Stigma Scale for Chronic Illnesses (Molina et al., 2013), which assesses enacted and internalised stigma. It is composed of 8 items. The responses for each item can be: 1 = Never, 2 = Rarely, 3 = Sometimes, 4 = Often, and 5 = Always. The raw summed score range is 8-40, with a higher score indicating a higher perceived stigma. Raw scores are then transformed into T-scores (a result of rescaling raw scores into standardized scores with a mean of 50 and a standard deviation of 10).

Investigation of the participant's satisfaction about hospitals, dentists, specialised physician, general practitioners, home care and Solidaris, through 6 questions ranging from 1 (very unsatisfied) to 5 (very satisfied).

Tobacco, alcohol, fruits and vegetables consumption are investigated through 5 questions: do you smoke ? / If yes, what do you smoke? / How often do you drink alcohol? / How often do you eat fruits? / How often do you eat vegetables?

Investigated through 2 questions: during the last 7 days, how many days did you practice intense physical activity? / during the last 7 days, how many days did you practice moderate physical activity? For each question, answers range from 0 to 7.

Investigated through 1 question: "how often do you use the Internet to search information about your health?". Answers range from 1 (never) to 5 (always).