TY - JOUR
T1 - Comparison of illness representations dimensions and illness representation clusters in predicting outcomes in the first year following diagnosis of type 2 diabetes
T2 - Results from the DESMOND trial
AU - Skinner, T. C.
AU - Carey, M. E.
AU - Cradock, S.
AU - Dallosso, H. M.
AU - Dalyb, H.
AU - Davies, M. J.
AU - Doherty, Y.
AU - Heller, S.
AU - Khunti, K.
AU - Olivere, L.
PY - 2011/3/1
Y1 - 2011/3/1
N2 - This article explores the utility of cluster analysis of illness representations, in comparison to analysing each dimension of the individual's illness representation, to predict an individual's response to diagnosis of type 2 diabetes. Participants in a large multi-centre randomised controlled trial of a self-management education intervention for people with type 2 diabetes, completed measures of illness beliefs (coherence, timeline, impact, seriousness, personal responsibility) and depression along with HbA1c and body mass index (BMI), at baseline 4, 8 and 12 months. The results of the cluster analysis were compared with an independent qualitative study of participants' responses to diagnosis and participation in the study. The quantitative analysis of 564 participants for whom complete data were available, identified four clusters of illness representations as the most parsimonious description of the data. The mean profiles of these clusters were comparable with groups identified by the independent qualitative analysis, and predicted the trajectory of illness outcomes over the 1-year follow-up. Combining illness beliefs into discrete clusters may be more useful in understanding patterns of responding to illness than using analysis of illness beliefs dimensions independently.
AB - This article explores the utility of cluster analysis of illness representations, in comparison to analysing each dimension of the individual's illness representation, to predict an individual's response to diagnosis of type 2 diabetes. Participants in a large multi-centre randomised controlled trial of a self-management education intervention for people with type 2 diabetes, completed measures of illness beliefs (coherence, timeline, impact, seriousness, personal responsibility) and depression along with HbA1c and body mass index (BMI), at baseline 4, 8 and 12 months. The results of the cluster analysis were compared with an independent qualitative study of participants' responses to diagnosis and participation in the study. The quantitative analysis of 564 participants for whom complete data were available, identified four clusters of illness representations as the most parsimonious description of the data. The mean profiles of these clusters were comparable with groups identified by the independent qualitative analysis, and predicted the trajectory of illness outcomes over the 1-year follow-up. Combining illness beliefs into discrete clusters may be more useful in understanding patterns of responding to illness than using analysis of illness beliefs dimensions independently.
KW - Cluster analysis
KW - Depression
KW - Illness representations
KW - Type 2 diabetes
KW - Weight loss
UR - http://www.scopus.com/inward/record.url?scp=79951830989&partnerID=8YFLogxK
U2 - 10.1080/08870440903411039
DO - 10.1080/08870440903411039
M3 - Journal article
C2 - 20309775
AN - SCOPUS:79951830989
VL - 26
SP - 321
EP - 335
JO - Psychology and Health
JF - Psychology and Health
SN - 0887-0446
IS - 3
ER -