title: Mobility difficulties are not only a problem of old age.
abstract: BACKGROUND
  Lower extremity mobility difficulties often result from common medical conditions and can disrupt both physical and emotional well-being.
  
  
  OBJECTIVE
  To assess the national prevalence of mobility difficulties among noninstitutionalized adults and to examine associations with demographic characteristics and other physical and mental health problems.
  
  
  METHODS
  Cross-sectional survey using the 1994-1995 National Health Interview Survey-Disability Supplement (NHIS-D). We constructed measures of minor, moderate, and major lower extremity mobility difficulties using questions about ability to walk, climb stairs, and stand, and use of mobility aids (e.g., canes, wheelchairs). Age and gender adjustment used direct standardization methods in Software for the Statistical Analysis of Correlated Data (SUDAAN).
  
  
  METHODS
  Noninstitutionalized, civilian U.S. residents aged 18 years and older. National Health Interview Survey sampling weights with SUDAAN provided nationally representative population estimates.
  
  
  RESULTS
  An estimated 19 million people (10.1%) reported some mobility difficulty. The mean age of those with minor, moderate, or major difficulty ranged from 59 to 67 years. Of those reporting major difficulties, 32% said their problems began at aged 50 years or younger. Adjusted problem rates were higher among women (11.8%) than men (8.8%), and higher among African American (15.0%) than whites (10.0%). Persons with mobility difficulties were more likely to be poorly educated, living alone, impoverished, obese, and having problems conducting daily activities. Among persons with major mobility difficulties, 30.6% reported being frequently depressed or anxious, compared to 3.8% for persons without mobility difficulties.
  
  
  CONCLUSIONS
  Reports of mobility difficulties are common, including among middle-aged adults. Associations with poor performance of daily activities, depression, anxiety, and poverty highlight the need for comprehensive care for persons with mobility problems.
authors.affiliation: Division of General Medicine and Primary Care, Department of Medicine, Harvard Medical School, Beth Israel Deaconess Medical Center, 330 Brookline Ave., Boston, MA 02215, USA. liezzoni@caregroup.harvard.edu
authors.forename: L I
authors.initials: LI
authors.lastname: Iezzoni
authors.forename: E P
authors.initials: EP
authors.lastname: McCarthy
authors.forename: R B
authors.initials: RB
authors.lastname: Davis
authors.forename: H
authors.initials: H
authors.lastname: Siebens
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D000328:Adult; D000368:Aged / Q000502:physiology*; D002908:Chronic Disease; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007866:Leg / Q000502:physiology; D008297:Male; D017678:Sex Distribution; D012959:Socioeconomic Factors; D016138:Walking / Q000706:statistics & numerical data*