title: Preference of lid design characteristics by older adults with limited hand function.
abstract: BACKGROUND
  Although opening jars is problematic for older adults, little is known about the best interface design for jar lids.
  
  
  OBJECTIVE
  To evaluate preferences in current and new lids for persons self-reporting difficulty with opening jars.
  
  
  METHODS
  Participants were twenty-six older females with hand pain. Preference ratings were obtained for twenty-four current and forty-two new lid designs of different sizes, shapes, and textures.
  
  
  RESULTS
  Current lids with taller heights, larger diameters, and textured sides were preferred. Texture compensated for limitations of shorter and smaller diameter lids. Preferred characteristics in new smaller diameter lids included taller height, non-circular top shapes, and concave side shapes. Taller height, regardless of shape, was preferred for new medium diameter lids. Least preferred for small and medium lids was the short height, traditional circular shape.
  
  
  CONCLUSIONS
  The preferences of jar lids made by elderly females with hand pain support the recommendations commonly suggested by clinicians to increase the height, diameter, texture, and shape of jars, especially for lids smaller than 40 mm.
authors.affiliation: The Ohio State University, Columbus, Ohio, USA.
authors.forename: Wei-Ting
authors.initials: WT
authors.lastname: Yen
authors.forename: Sharon R
authors.initials: SR
authors.lastname: Flinn
authors.forename: Carolyn M
authors.initials: CM
authors.lastname: Sommerich
authors.forename: Steven A
authors.initials: SA
authors.lastname: Lavender
authors.forename: Elizabeth B-N
authors.initials: EB
authors.lastname: Sanders
mesh_terms: D000368:Aged; D000375:Aging / Q000502:physiology*; D003258:Consumer Behavior; D004185:Disability Evaluation; D004867:Equipment Design; D005260:Female; D017144:Focus Groups; D006225:Hand / Q000503:physiopathology*; D006801:Humans; D009048:Motor Skills / Q000502:physiology*; D019064:Product Packaging
keywords: ADL limitations; Hand function assessment; Hand pain; Jar lids