Fig. 1

Characteristics of attacks. a Number of attacks in the past 6 months (n = 242). b Time since the most recent attack (n = 242). Patients were asked “When was your most recent angioedema attack? Please select the answer closest to the time when your first symptom of the attack appeared.” c Duration of the most recent attack (n = 242). Patients were asked “What was the duration of your most recent angioedema attack? Consider the time from when your first symptom appeared to when you noticed that all of the symptoms of the attack had disappeared.” d Location of the most recent attack (n = 242). More than 1 location could have been affected. Patients were asked “What area(s) of your body was (were) affected in your most recent angioedema attack? Select all that apply.” e Symptoms and symptom severity during the most recent attack (n = 242). Patients could select more than one response. Patients were asked “Which of the following symptoms, if any, did you experience as part of your most recent angioedema attack? Select all that apply.” and “Thinking of your most recent angioedema attack AT ITS WORST, please rate each symptom’s severity as None, Mild, Moderate, or Severe.”