What is the best measure for assessing diabetes distress? A comparison of the Problem Areas in Diabetes and Diabetes Distress Scale: results from Diabetes MILES-Australia.
This study used Rasch analysis to examine the psychometric validity of the Diabetes Distress Scale and the Problem Areas in Diabetes scale to assess diabetes distress in 3338 adults with diabetes (1609 completed the Problem Areas in Diabetes scale ( n = 675 type 1 diabetes; n = 934 type 2 diabetes) and 1705 completed the Diabetes Distress Scale ( n = 693 type 1 diabetes; n = 1012 type 2 diabetes)). While criterion and convergent validity were good, Rasch analysis revealed suboptimal precision and targeting, and item misfit. Unresolvable multidimensionality within the Diabetes Distress Scale suggests a total score should be avoided, while suboptimal precision suggests that the Physician-related and Interpersonal distress subscales should be used cautiously.
1 Centre for Eye Research Australia, University of Melbourne, the Royal Victorian Eye and Ear Hospital.|2 Singapore Eye Research Institute, Singapore.|3 Duke-NUS Medical School, Singapore.
Eva K
EK
Fenwick
1 Centre for Eye Research Australia, University of Melbourne, the Royal Victorian Eye and Ear Hospital.
Gwyn
G
Rees
4 The Australian Centre for Behavioural Research in Diabetes, Australia.|5 Centre for Social and Early Emotional Development, School of Psychology, Deakin University, Australia.
Elizabeth
E
Holmes-Truscott
4 The Australian Centre for Behavioural Research in Diabetes, Australia.|5 Centre for Social and Early Emotional Development, School of Psychology, Deakin University, Australia.
Jessica L
JL
Browne
6 Department of Medical and Clinical Psychology, Centre of Research on Psychology in Somatic diseases (CoRPS), Tilburg University, The Netherlands.
Frans
F
Pouwer
4 The Australian Centre for Behavioural Research in Diabetes, Australia.|5 Centre for Social and Early Emotional Development, School of Psychology, Deakin University, Australia.|7 AHP Research Ltd, UK.
Jane
J
Speight
D000328:Adult; D001315:Australia; D003922:Diabetes Mellitus, Type 1 / Q000523:psychology*; D003924:Diabetes Mellitus, Type 2 / Q000523:psychology*; D005260:Female; D006801:Humans; D055809:Illness Behavior; D008297:Male; D008875:Middle Aged; D011594:Psychometrics / Q000706:statistics & numerical data*; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
Rasch analysis; diabetes distress; patient-reported outcomes; psychometric; questionnaire