This study assessed differences between Europeans, South Asians and Pacific Islanders in illness perceptions, self-efficacy, self-care, metabolic control and retinopathy in diabetes. We also evaluated the role of illness perceptions and self-efficacy in diabetes self-care and metabolic control within each group. A total of 86 Europeans, 86 South Asians, and 87 Pacific Islanders with type-2 diabetes completed self-report measures of illness perceptions, self-efficacy and self-care. Metabolic control and retinopathy data were collected from patient records. Results showed that Pacific Islanders and South Asians held shorter illness timeline perceptions compared to Europeans. Relative to both the other groups, Pacific Islanders also had elevated scores on three illness perceptions subscales: consequences, identity and emotional representations. They had lower medication-specific self-efficacy as well as poorer medication self-care, metabolic control and retinopathy. In all three groups, self-efficacy was fairly consistently related to self-care, but not to metabolic control. Illness perceptions were less consistently related to self-care, but were associated with metabolic control.

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Previous studies have shown that the outcomes of complex regional pain syndrome (CRPS) vary significantly between patients, but few studies have identified prognostic indicators. The aim of this study was to determine whether psychological factors are associated with recovery from recently onset CRPS amongst patients followed prospectively for 1 year. Sixty-six patients with CRPS (type 1) were recruited within 12 weeks of symptom onset and assessed immediately and at 6 and 12 months, during which time they received treatment as usual. At each assessment, the following were measured: signs and symptoms of CRPS, pain, disability, depression, anxiety, stress, pain-related fear, pain catastrophising, laterality task performance, body perception disturbance, and perceived ownership of the limb. Mixed-effects models for repeated measures were conducted to identify baseline variables associated with CRPS severity, pain, and disability over the 12 months. Results showed that scores for all 3 outcome variables improved over the study period. Males and those with lower levels of baseline pain and disability experienced the lowest CRPS severity scores over 12 months. Those with lower baseline anxiety and disability had the lowest pain intensity over the study period, and those with lower baseline pain and pain-related fear experienced the least disability over the 12 months. This suggests that anxiety, pain-related fear, and disability are associated with poorer outcomes in CRPS and could be considered as target variables for early treatment. The findings support the theory that CRPS represents an aberrant protective response to perceived threat of tissue injury.