title: Development and initial psychometric evaluation of the Mobility Activities Measure for Inpatient Rehabilitation Settings (Mobam-in).
abstract: OBJECTIVE
  To describe the development and the initial psychometric evaluation of a mobility measure for inpatient postacute rehabilitation settings—the Mobility Activities Measure for Inpatient Rehabilitation Settings (Mobam-in).
  
  
  METHODS
  Self-report-based psychometric study.
  
  
  METHODS
  Postacute rehabilitation unit of a public hospital.
  
  
  METHODS
  A consecutive sample of inpatients (N=239) receiving postacute rehabilitation care.
  
  
  METHODS
  Not applicable.
  
  
  METHODS
  We developed a 30-item mobility measure, using the Mobility Activities Measure (Mobam) framework, to assess functioning across 5 mobility activity domains classified within the International Classification of Functioning, Disability and Health. These were (1) changing and maintaining body position involving only sitting and/or lying (4 items); (2) changing and maintaining body position involving standing up (6 items); (3) carrying and moving objects using the hand and shoulder (6 items); (4) handling objects using only the hand and/or forearm (7 items); and (5) walking and moving (7 items). Psychometric analyses were conducted to test assumptions underlying the scaling and scoring of Mobam-in scales, and to test both the reliability and validity.
  
  
  RESULTS
  Multitrait scaling and confirmatory factor analyses (with Tucker-Lewis Index median, .99; root mean square error of approximation median, .025) supported the assumption of unidimensionality concerning each domain. Five dimensions appeared to be stable across diverse diagnostic groups (the percentage of items with discriminant validity ranged from 93% to 100%, Cronbach coefficient ranged from .859 to .966). Rasch model (Masters' partial credit) showed that all items could be located along a continuum in each dimension, with goodness-of-fit criteria of infit and outfit mean-square values between 0.6 and 1.4. Test-retest reliability was excellent (intraclass correlation coefficients median, .98). Groups with more severe conditions and lower functional independence scored lower on Mobam-in scales, as hypothesized.
  
  
  CONCLUSIONS
  Mobam-in covers 5 dimensions of mobility activities. The Mobam framework is an effective reference for building outcome instruments.
authors.affiliation: Department of Physical Therapy, Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, Murcia, Spain. Electronic address: mirapeix@um.es.
authors.forename: Francesc
authors.initials: F
authors.lastname: Medina-Mirapeix
authors.affiliation: Department of Physical Therapy, EUSES University School, University of Girona, Girona, Spain.
authors.forename: Mariano
authors.initials: M
authors.lastname: Gacto-Sánchez
authors.affiliation: Department of Education, Region of Murcia, Murcia, Spain.
authors.forename: Esther
authors.initials: E
authors.lastname: Navarro-Pujalte
authors.affiliation: Department of Physical Therapy, Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, Murcia, Spain.
authors.forename: Joaquina
authors.initials: J
authors.lastname: Montilla-Herrador
authors.affiliation: Department of Pathology and Surgery, University "Miguel Hernández", Alicante, Spain.
authors.forename: Carmen
authors.initials: C
authors.lastname: Lillo-Navarro
authors.affiliation: Department of Physical Therapy, Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, Murcia, Spain.
authors.forename: Pilar
authors.initials: P
authors.lastname: Escolar-Reina
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004185:Disability Evaluation; D006801:Humans; D017770:Lifting; D008875:Middle Aged; D009068:Movement; D004856:Postural Balance; D011594:Psychometrics; D020127:Recovery of Function; D012047:Rehabilitation Centers; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D016138:Walking
keywords: Disability evaluation; Mobility limitation; Physical therapy; Physiotherapy; Rehabilitation