Case and Use Scenario Study to Gain Knowledge on the User Needs for a Medical Device for Hemophilia a Monitoring

Inclusion Criteria: Patients: * With Hemophilia A diagnosis * All Hemophilia A severity categories are eligible (mild, moderate, or severe) * Aged 12 years and older * For children aged 12 through 17 their parent must provide permission by signing the informed consent form * Consider English their primary language (capable of communicating in English verbally and in writing) * Capable of giving informed consent or assent Family member(s) of patients: * Related to a patient with Hemophilia A (mild, moderate, or severe) * Aged 18 years and older * Consider English their primary language (capable of communicating in English verbally and in writing) * Capable of giving informed consent or assent Healthcare professionals: * Healthcare workers specialized in hemophilia care. (e.g. hematologists, nurse practitioners, physician assistants, nurses, and pharmacists) * Capable of giving informed consent Exclusion Criteria: Patients: * Without a diagnosis of Hemophilia A * With acquired Hemophilia A * Younger than 12 years of age * Unable to communicate in English * Incapable of giving consent or assent for themselves Specifically for the case scenario focus group * Unwilling to consent to voice recording * Participating in the use scenario part of the study Specifically for the use scenario part of the study * Unwilling to consent to video recording * Participating in the case scenario part of the study Family members: * No relation to a patient with Hemophilia A (mild, moderate, or severe) * Related to a patient with acquired Hemophilia A * Younger than 18 years of age * Unable to communicate in English * Incapable of giving consent or assent for themselves Specifically for the case scenario focus group * Unwilling to consent to voice recording * Participating in the use scenario part of the study Specifically for the use scenario part of the study * Unwilling to consent to video recording * Participating in the case scenario part of the study Healthcare professionals: * Without any prior hematological experience * Not licensed as hematologists, nurse practitioners, physician assistants, nurses or pharmacists * Unable to communicate in English * Incapable of giving their consent to participate Specifically for the case scenario part of the study • Unwilling to consent to voice recording Specifically for the use scenario part of the study • Unwilling to consent to video recording