title: Validation and Establishment of an Interval-Level Measure of the Balance Assessment in Sitting and Standing Positions in Patients With Stroke.
abstract: To validate the psychometric properties of the Balance Assessment in Sitting and Standing Positions, including validity (unidimensionality and concurrent validity), reliability (Rasch reliability), and responsiveness (compared with the Postural Assessment Scale for Stroke Patients [PASS]) and to transform the Balance Assessment in Sitting and Standing Positions from an ordinal-level measure into an interval-level measure.
  
  
  
  Retrospective cross-sectional study.
  
  
  
  Medical records from a medical center.
  
  
  
  Patients with stroke (N=1193).
  
  
  
  Not applicable.
  
  
  
  The 4-item Balance Assessment in Sitting and Standing Positions was used, assessing static sitting balance, dynamic sitting balance, static standing balance, and dynamic standing balance.
  
  
  
  Data of 1193 patients with stroke were included for Rasch analysis. The 4 items of the Balance Assessment in Sitting and Standing Positions constituted a unidimensional construct (infit/outfit mean square, .75-1.05), had good concurrent validity (r=.70-.90), and had sufficient Rasch reliability (.93). The Balance Assessment in Sitting and Standing Positions had large responsiveness (effect size, 1.20; standardized response mean, 1.51) and was comparable with the PASS (effect size, .90; standardized response mean, 1.32).
  
  
  
  The Balance Assessment in Sitting and Standing Positions has sound psychometric properties. The transformed-Rasch scores of the Balance Assessment in Sitting and Standing Positions can be used to identify patients' balance function and detect patients' changes.
authors: School of Occupational Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan.
authors: Chien-Yu
authors: CY
authors: Huang
authors: Department of Health Promotion and Gerontological Care, Taipei College of Maritime Technology, Taipei, Taiwan.
authors: Chen-Yi
authors: CY
authors: Song
authors: Department of Occupational Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Physical Medicine and Rehabilitation, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
authors: Kuan-Lin
authors: KL
authors: Chen
authors: Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan.
authors: Yi-Miau
authors: YM
authors: Chen
authors: School of Occupational Therapy, Chung Shan Medical University, Taichung, Taiwan; Occupational Therapy Room, Chung Shan Medical University Hospital, Taichung, Taiwan.
authors: Wen-Shian
authors: WS
authors: Lu
authors: School of Occupational Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan.
authors: I-Ping
authors: IP
authors: Hsueh
authors: School of Occupational Therapy, College of Medicine, National Taiwan University, Taipei, Taiwan; Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital, Taipei, Taiwan. Electronic address: clhsieh@ntu.edu.tw.
authors: Ching-Lin
authors: CL
authors: Hsieh
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D026741:Physical Therapy Modalities / Q000592:standards*; D004856:Postural Balance / Q000502:physiology*; D011187:Posture / Q000502:physiology*; D011594:Psychometrics; D015203:Reproducibility of Results; D012189:Retrospective Studies; D000071939:Stroke Rehabilitation / Q000379:methods*
keywords: Rehabilitation; Stroke