Healthcare professionals’ pre-survey questionnaire 1. How important is choice/availability of biologics to you, i.e. that you will ultimately have a selection to choose from when treating AD patients?  [Answer options: a) Not at all important, b) Somewhat important, c) Very important] 2. Out of 10 patients treated with biologics for AD, in how many can you expect to see treatment success based on your own definition [Answer options: a) 0–3 patients, b) 4–6 patients, c) 7–10 patients] 3. Out of 10 patients treated with biologics for AD, in how many do you only see a partial response based on your own definition?  [Answer options: a) 0–3 patients, b) 4–6 patients, c) 7–10 patients] 4. Out of 10 patients treated with biologics for AD, how many will be in combination therapy with topical treatments?  [Answer options: a) 0–3 patients, b) 4–6 patients, c) 7–10 patients] 5. Out of 10 patients, in how many do you combine biologics with systemics (e.g. cyclosporine and/or methotrexate)?  [Answer options: a) 0–3 patients, b) 4–6 patients, c) 7–10 patients] 6. Is it easy for you to prescribe biologic therapy for AD?  [Answer options: a) Not easy at all, b) Somewhat easy, c) Very easy] 7. To what extent are biologics helping you achieve your patient treatment targets?  [Answer options: a) Not helpful at all b) Somewhat helpful, c) Very helpful] 8. Are you satisfied overall with current treatment options for your AD patients?  [Answer options: a) Not satisfied at all, b) Somewhat satisfied, c) Very satisfied] Patients’ pre-survey questionnaire 1. How is AD affecting your quality of life right now?  [Answer options: a) Responsible for poor quality of life, b) Somewhat affecting my quality of life, c) Hardly affecting my quality of life] 2. How was AD affecting your quality of life before you tried biologic therapy?  [Answer options: a) Responsible for poor quality of life, b) Somewhat affecting my quality of life, c) Hardly affecting my quality of life] 3 Based on your experience with other treatments for AD, how much of a positive difference would you say biologics have made for you?  [Answer options: a) Not much difference, b) Moderate difference, c) Significant difference] 4 What has your experience been in obtaining access to biologic therapy?  [Answer options: a) Difficult, b) Moderately easy, c) Very easy] 5. To what extent do you feel the biologic you are using is relieving your AD symptoms?  [Answer options: a) Not at all, b) To some extent, c) Fully] 6. How would you rank the experience of taking/administering biologic therapy?  [Answer options: a) Difficult, b) Moderately easy, c) Very easy] 7. To what extent are you satisfied overall with the biologic treatment for your AD?  [Answer options: a) Not at all satisfied, b) Somewhat satisfied, c) Very satisfied] 8. To what extent did you ask for the treatment versus your doctor suggesting it?  [Answer options: a) I suggested it, b) We discussed it/collaborative decision, c) My doctor suggested it] 9. How are you currently treated for your AD? [Answer options: a) Biologic only, b) Biologic in combination with one/  more topical or other products, c) No longer treated with biologic, only other types of treatments] 10. When diagnosed with AD, to what extent were you provided with sufficient information on AD and treatment?  [Answer options: a) None/very little information, b) Sufficient information, c) Too much/information too overwhelming] 11. How long have you been treated with a biologic for your AD? [Answer options: a) 0–3 months, b) 3–6 months, c) More than 6 months]