Development of a Functional Assessment of Side-effects to Therapy (FAST) Questionnaire to Assess Dermatology-Related Quality of Life in Patients Treated With EGFR Inhibitors: The FAST-EGFR Inhibitors: The FAST-EGFRI and Development of an Investigator Grading System: The Skin and Eye Reactions to Inhibitors of EGFR (SERIES) Score

Qualitative Data From Patients and Experts to Measure Anti-EGFR Therapy-specific Health-related Quality of Life (HRQL)

Time Frame: at time of questionnaire

Patients were asked "How important is this symptoms or concern to your quality of life?" They were given a series of items (listed in the table) and instructed to assign each item a numerical value of 0 to 3, where 0 is equivalent to "not at all important" and 3 is equivalent to "extremely important." Experts were asked "How important is this symptom or concern to patients' quality of life?" They were given the same series of items and instructed to assign each item a numerical value of 0 to 3, where 0 is equivalent to "not at all important" and 3 is equivalent to "extremely important." For each item, a mean score was calculated using the values assigned to that item from all patients, and a second mean score was calculated using the values assigned to that item from all experts. An item's mean score may range from 0 to 3, where 0 is equivalent to "not at all important to quality of life" and where 3 is equivalent to "extremely important to quality of life."