S D Mathias1, M M Chren2, R D Crosby3, H H Colwell1, Y M Yim4, C Reyes4, D M Chen4, S W Fosko5. 1. Health Outcomes Solutions, 2351 Via Tuscany, Winter Park, FL, 32789, U.S.A. 2. Department of Dermatology, University of California San Francisco, San Francisco, CA, U.S.A. 3. Health Outcomes Solutions, Neuropsychiatric Research Institute, and University of North Dakota School of Medicine and Health Sciences, Fargo, ND, U.S.A. 4. Genentech, San Francisco, CA, U.S.A. 5. Departments of Dermatology, Internal Medicine, Head and Neck Surgery-Otolaryngology and Ophthalmology, Saint Louis University Cancer Center, Saint Louis University School of Medicine, St Louis, MO, U.S.A.
Abstract
BACKGROUND: Patient-reported outcome (PRO) questionnaires were recently developed specifically for use with patients with advanced basal cell carcinoma (aBCC) and basal cell carcinoma naevus syndrome (BCCNS). OBJECTIVES: To evaluate the measurement properties of PRO questionnaires for use in patients with aBCC or BCCNS. METHODS: In total 129 patients from 10 clinical sites in the U.S.A. and the BCCNS Support Network completed the two newly developed questionnaires multiple times over 3 months. Patients also completed the Skindex-16 and the 12-Item Short-Form Health Survey as collateral measures. Psychometric properties of the questionnaires were evaluated, including internal consistency and test-retest reliability, construct and known-groups validity, and responsiveness. RESULTS: Based on the results of exploratory factor analysis and clinical input, the two newly developed questionnaires were combined into a single questionnaire, called the aBCCdex, which is relevant for patients with both aBCC and BCCNS. The internal consistency reliability was acceptable, and all aBCCdex scale scores correlated significantly with conceptually similar scales. When divided into groups that differed based on scores from collateral measures, aBCCdex scale scores differentiated between groups (known-groups validity) and were responsive to change. CONCLUSIONS: The aBCCdex is a brief and comprehensive questionnaire appropriate for use with patients with aBCC and BCCNS. Its reliability and validity have been confirmed. Further research is necessary to estimate the minimally important difference in a larger patient population.
BACKGROUND:Patient-reported outcome (PRO) questionnaires were recently developed specifically for use with patients with advanced basal cell carcinoma (aBCC) and basal cell carcinoma naevus syndrome (BCCNS). OBJECTIVES: To evaluate the measurement properties of PRO questionnaires for use in patients with aBCC or BCCNS. METHODS: In total 129 patients from 10 clinical sites in the U.S.A. and the BCCNS Support Network completed the two newly developed questionnaires multiple times over 3 months. Patients also completed the Skindex-16 and the 12-Item Short-Form Health Survey as collateral measures. Psychometric properties of the questionnaires were evaluated, including internal consistency and test-retest reliability, construct and known-groups validity, and responsiveness. RESULTS: Based on the results of exploratory factor analysis and clinical input, the two newly developed questionnaires were combined into a single questionnaire, called the aBCCdex, which is relevant for patients with both aBCC and BCCNS. The internal consistency reliability was acceptable, and all aBCCdex scale scores correlated significantly with conceptually similar scales. When divided into groups that differed based on scores from collateral measures, aBCCdex scale scores differentiated between groups (known-groups validity) and were responsive to change. CONCLUSIONS: The aBCCdex is a brief and comprehensive questionnaire appropriate for use with patients with aBCC and BCCNS. Its reliability and validity have been confirmed. Further research is necessary to estimate the minimally important difference in a larger patient population.
Authors: B J A Verkouteren; B Cosgun; M G H C Reinders; P A W K Kessler; R J Vermeulen; M Klaassens; S Lambrechts; J R van Rheenen; M van Geel; M Vreeburg; K Mosterd Journal: Br J Dermatol Date: 2021-11-08 Impact factor: 11.113
Authors: Mario E Lacouture; Brigitte Dréno; Paolo Antonio Ascierto; Reinhard Dummer; Nicole Basset-Seguin; Kate Fife; Scott Ernst; Lisa Licitra; Rogerio I Neves; Ketty Peris; Susana Puig; Jonas Sokolof; Aleksandar Sekulic; Axel Hauschild; Rainer Kunstfeld Journal: Oncologist Date: 2016-08-10