INS and diabetes mellitus: Some questionnaires have been designed to assess concepts that may be related to treatment simplicity, such as treatment burden (e.g., the Treatment-Related Impact Measures for Diabetes and Devices, Diabetes Medication Satisfaction, Diabetic Treatment Burden Questionnaire) [19–21] and treatment satisfaction (e.g., Insulin Treatment Satisfaction Questionnaire; Diabetes Treatment Satisfaction Questionnaire, Patient Satisfaction with Insulin Treatment) [20, 22–24].