title: Validity and responsiveness of the Measure of Activity Performance of the Hand (MAP-Hand) in patients with hand osteoarthritis.
abstract: BACKGROUND
  The Measure of Activity Performance of the Hand (MAP-Hand) is reliable and valid in patients with rheumatoid arthritis.
  
  
  OBJECTIVE
  To assess the validity and responsiveness of the MAP-Hand in patients with hand osteoarthritis.
  
  
  METHODS
  Patients were recruited from 2 rheumatology centres. The internal consistency of the MAP-Hand was assessed by Cronbach's α. Content validity was evaluated based on patient interviews. Construct validity and responsiveness were based on predefined hypotheses of correlation between the MAP-Hand and concurrent measures.
  
  
  RESULTS
  Ten men and 201 women, mean age 62.8 years (standard deviation (SD) 6.8) and disease duration 12.5 (SD 7.5) years were included. A Cronbach's α of 0.86 was determined. All 18 items in the MAP-Hand were described in the interviews. Sixty-seven percent of the correlation coefficients for baseline scores and 75% for change scores were in correspondence with the predefined hypotheses. A high correlation was found between the MAP-Hand and the Australian/Canadian Hand Osteoarthritis Index function score at baseline (rho = 0.76). A moderate correlation was found for change scores (rho = 0.52).
  
  
  CONCLUSIONS
  The content of the MAP-Hand adequately reflects described activity limitations in patients with hand osteoarthritis. The results suggest that the MAP-Hand has adequate internal consistency and responsiveness. Before the MAP-Hand is used in patients with hand osteoarthritis, evaluations of reliability and further construct validity are warranted.
authors.affiliation: National Resource Center for Rehabilitation in Rheumatology, Diakonhjemmet Hospital, Oslo, Norway. linda.fernandes1@gmail.com.
authors.forename: Linda
authors.initials: L
authors.lastname: Fernandes
authors.forename: Margreth
authors.initials: M
authors.lastname: Grotle
authors.forename: Siri
authors.initials: S
authors.lastname: Darre
authors.forename: Randi
authors.initials: R
authors.lastname: Nossum
authors.forename: Ingvild
authors.initials: I
authors.lastname: Kjeken
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D001172:Arthritis, Rheumatoid / Q000175:diagnosis / Q000503:physiopathology; D005260:Female; D050823:Hand Joints / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000175:diagnosis* / Q000503:physiopathology; D015203:Reproducibility of Results; D012720:Severity of Illness Index