title: Activities-specific Balance Confidence (ABC) Scale adapted for the mainland population of China.
abstract: OBJECTIVE
  To evaluate the reliability and validity of a Chinese Mandarin version of the Activities-specific Balance Confidence (ABC) Scale.
  
  
  METHODS
  Cross-sectional.
  
  
  METHODS
  A rehabilitation centre for adults.
  
  
  METHODS
  Sixty-one elderly people living in the community.
  
  
  METHODS
  Self-efficacy in balancing ability was assessed via a Mandarin Chinese version of the ABC Scale.
  
  
  RESULTS
  The intraclass correlation coefficients for test-retest and inter-rater reliability of the Chinese Mandarin version of the ABC Scale were 0.98 (95% confidence interval (CI) 0.96-0.99) and 0.96 (95% CI 0.94-0.98), respectively. The Cronbach's α coefficient of internal consistency was 0.94. In the Bland-Altman analysis the mean difference in the ABC test-retest scores was -1.81, and the 95% limits of agreement varied from -10.67 to 7.03. The evaluation of inter-rater reliability showed that the mean difference was -1.13, and the 95% limits of agreement varied from -9.55 to 7.30. The factor analysis method was adopted to assess the validity of the scaled activities and two factors contributed to total variance at 52.5% and 13.6%, respectively.
  
  
  CONCLUSIONS
  The Chinese Mandarin version of the ABC Scale is reliable and valid, and is suitable for assessments of balance confidence in aged people in mainland China.
authors.affiliation: Department of Neurology, Tongji Hospital, Tongji University, Shanghai, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Guan
authors.forename: Hongjie
authors.initials: H
authors.lastname: Han
authors.forename: Yunxia
authors.initials: Y
authors.lastname: Li
authors.forename: Lijuan
authors.initials: L
authors.lastname: Zhao
authors.forename: Lingjing
authors.initials: L
authors.lastname: Jin
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhan
mesh_terms: D000058:Accidental Falls; D000368:Aged; D000369:Aged, 80 and over; D002681:China; D003430:Cross-Sectional Studies; D005163:Factor Analysis, Statistical; D005239:Fear; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D004856:Postural Balance / Q000502:physiology*; D011594:Psychometrics; D015203:Reproducibility of Results; D020377:Self Efficacy; D014177:Translations; D016138:Walking