title: Subjective numeracy scale as a tool for assessing statistical numeracy in older adult populations.
abstract: BACKGROUND
  Statistical numeracy, necessary for making informed medical decisions, is reduced among older adults who make more decisions about their medical care and treatment than at any other stage of life. Objective numeracy scales are a source of anxiety among patients, heightened among older adults.
  
  
  OBJECTIVE
  We investigate the subjective numeracy scale as an alternative tool for measuring statistical numeracy with older adult samples.
  
  
  METHODS
  Numeracy was assessed using objective measures for 526 adults ranging in age from 18 to 93 years, and all participants provided subjective numeracy ratings.
  
  
  RESULTS
  Subjective numeracy correlated highly with objective measurements among oldest adults (70+ years; r = 0.51, 95% CI 0.32, 0.66), and for younger age groups. Subjective numeracy explained 33.2% of age differences in objective numeracy.
  
  
  CONCLUSIONS
  The subjective numeracy scale provides an effective tool for assessing statistical numeracy for broad age ranges and circumvents problems associated with objective numeracy measures.
authors: School of Psychology, Queen's University Belfast, Belfast, UK. j.rolison@qub.ac.uk
authors: Jonathan J
authors: JJ
authors: Rolison
authors: Stacey
authors: S
authors: Wood
authors: Yaniv
authors: Y
authors: Hanoch
authors: Pi-Ju
authors: PJ
authors: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000523:psychology*; D001007:Anxiety; D056808:Biostatistics; D003657:Decision Making; D005260:Female; D057220:Health Literacy; D006801:Humans; D008297:Male; D055641:Mathematical Concepts; D008875:Middle Aged; D012306:Risk; D011795:Surveys and Questionnaires; D055815:Young Adult