title: Intuitive numeric rating scale to measure performance status in cancer patients.
authors.forename: Alvaro
authors.initials: A
authors.lastname: Sanz
authors.forename: María Luisa
authors.initials: ML
authors.lastname: del Valle
authors.forename: Celia
authors.initials: C
authors.lastname: Gutiérrez
authors.forename: Silvia
authors.initials: S
authors.lastname: Hernansanz
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006304:Health Status; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms; D010147:Pain Measurement; D011446:Prospective Studies; D012720:Severity of Illness Index