title: Cancer Functional Assessment Set: a new tool for functional evaluation in cancer.
abstract: OBJECTIVE
  The aim of this study was to develop and evaluate the psychometric properties of a new measurement tool, the Cancer Functional Assessment Set (cFAS).
  
  
  METHODS
  A total of 119 inpatients with cancer participated in this prospective cohort study. This study took place in three phases: (1) item generation, literature search, and a round-table discussion by 32 rehabilitation specialists; (2) item reduction and selection of appropriate items from the first item pool; and (3) evaluation of psychometric properties. Concurrent validity (Spearman correlation coefficients with existing scales), internal reliability (Cronbach coefficient alpha), interrater reliability (weighted kappa statistics and intraclass correlation coefficient), cross-validation, and responsiveness (standardized response mean values) were examined.
  
  
  RESULTS
  The cFAS consisted of 24 items. Significant correlations were found between the cFAS and existing scales. Cronbach α for the total score was 0.92. Weighted κ values for each item ranged from 0.74 to 1.00. The intraclass correlation for the total score was 0.97. Concurrent validity and internal consistency were similar at two different hospitals. The cFAS was more responsive to changes than the other tools.
  
  
  CONCLUSIONS
  The cFAS has acceptable psychometric properties, supporting its broad generalizability. It can be a useful tool in clinical trials and can contribute to the development of cancer rehabilitation.
authors.affiliation: From the Department of Rehabilitation Medicine, Keio University School of Medicine, Tokyo, Japan (CM, TT, AI, KH, ML); and Division of Rehabilitation Medicine, Shizuoka Cancer Center, Shizuoka Prefecture, Japan (CM, AT).
authors.forename: Chieko
authors.initials: C
authors.lastname: Miyata
authors.forename: Tetsuya
authors.initials: T
authors.lastname: Tsuji
authors.forename: Akira
authors.initials: A
authors.lastname: Tanuma
authors.forename: Aiko
authors.initials: A
authors.lastname: Ishikawa
authors.forename: Kaoru
authors.initials: K
authors.lastname: Honaga
authors.forename: Meigen
authors.initials: M
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D009369:Neoplasms / Q000534:rehabilitation*; D011446:Prospective Studies; D011594:Psychometrics; D020127:Recovery of Function; D015203:Reproducibility of Results; D055815:Young Adult