Usability testing of EirV3-a computer-based tool for patient-reported outcome measures in cancer.

Purpose: Eir version 3 (V3) is an electronic tool for administration of patient-reported outcome measures (Eir-Patient) that immediately presents patient scores on the physician's computer (Eir-Doctor). Perceived usability is an important determinant for successful implementation. The aim of this study was to answer the following research question evaluated at the cancer outpatient clinics, in the patients' home, and at general practitioners' (GPs) offices: What are the number, type, and severity of usability issues evaluated by the patient (Eir-Patient module) and by the physician (Eir-Doctor module)?

Methods: A usability evaluation using observations, think-aloud sessions, individual interviews and focus group interviews in cancer patients and their physicians was conducted.