Identifying Clinically Relevant Functional Strata to Direct Mobility Preservation Among Patients Hospitalized With Medical Conditions

Elizabeth Marfeo, Pengsheng Ni, Chun Wang, David Weiss, Andrea L. Cheville

Research output: Contribution to journalArticlepeer-review


Objective: To develop a system to guide interpretation of scores generated from the newly developed item response theory (IRT)-based Functional Assessment in Acute Care Multidimensional Computerized Adaptive Test (FAMCAT), which assesses 3 important domains of function: Mobility, Daily Activities, and Applied Cognition. Design: Cross-sectional data was used to inform a modified Delphi approach to establish FAMCAT cutpoints delineating various functional ability levels. Setting: Large midwestern academic teaching hospital. Participants: Patients hospitalized to an inpatient medical service (N=2049). Interventions: Not applicable. Main Outcome Measures: FAMCAT Basic Mobility, Daily Activity, and Applied Cognition scores. Results: IRT-based score estimation data was successfully integrated with expert clinical feedback using a modified Delphi process to arrive at consensus yielding 4 functional level strata (ranging from bed-based mobility to independent mobility) for both the FAMCAT Mobility and Daily Activity scales; 1 cutpoint was supported to delineate 2 functional strata for Applied Cognition. Conclusions: Meaningful cutpoints were established for each FAMCAT domain using a data-informed, modified Delphi process for achieving consensus. The resulting FAMCAT interpretation guide may be used to develop an ability-matched mobility preservation program and identify patients who may require a higher level of supervision based on the resulting FAMCAT scores.

Original languageEnglish (US)
Pages (from-to)S78-S83.e1
JournalArchives of Physical Medicine and Rehabilitation
Issue number5
StatePublished - May 2022


  • Outcome assessment, health care
  • Patient reported outcome measure
  • Rehabilitation

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation


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