This study and preparation of this article were funded by Novartis Pharmaceuticals. This research was performed under a research contract between RTI Health Solutions and Novartis Pharmaceuticals. Brogan, Hogue, Demuro, and Barrett are employees of RTI Health Solutions. D'Alessio and Bal are employees of Novartis Pharmaceuticals. Study concept and design were contributed by DeMuro, Barrett, Bal, and Hogue. Brogan and Hogue took the lead in data collection, assisted by DeMuro and Bal. Data interpretation was performed by Brogan and Hogue, assisted by the other authors. The manuscript was written by D'Alessio and Brogan, along with the other authors, and revised primarily by Brogan, along with Hogue and assisted by the other authors. The abstract for this article was presented as a research poster at the following meetings: Hogue SL, Brogan A P, De Muro C, D'Alessio D, Bal V. Patient-reported outcomes (PRO) in post-progression oncology: implications in health technology assessments and payer decision making. Poster presented at the ISPOR 18th Annual European Meeting; November 7-11, 2015. Milan, Italy. Hogue SL, Brogan AP, De Muro C, D'Alessio D, Bal V. Influence of patient-reported outcomes (PRO) on market access decisions in markets with centralized healthcare systems. Poster presented at the ISPOR 18th Annual European Meeting; November 7-11, 2015. Milan, Italy. Hogue SL, Brogan AP, De Muro C, Barrett A, D'Alessio D, Bal V. Influence of patient-reported outcomes on market access decisions in decentralized markets (Brazil, Italy, Spain and the United States). Poster presented at the ISPOR 20th Annual Meeting; May 16-20, 2015. Philadelphia PA. Hogue SL, Brogan A P, De Muro C, Barrett A, McLeod L, D'Alessio D, et al. Payer Perspectives of Patient-Reported Outcomes Data: An Online Assessment. Poster presented at the ISOQOL 22nd Annual Meeting; October 21-24, 2015. Vancouver, British Columbia, Canada.