Peer-Supported Diabetes Self-Care Intervention to Improve Health Related Quality of Life (HRQoL) and Diabetes Management

The HRQoL will be measured by the Revised Version of Diabetes Quality of Life Questionnaire (Bujang et al., 2018). The scale has demonstrated good reliability, composite reliability for each domain was computed as well; "satisfaction" domain showed highest composite reliability of 0.922, followed by "worry" domain (0.794) and "impact" domain (0.781). The range of score for each item is 1 to 5 and total score for the scale is 13 - 65, where higher score indicates poorer quality of life.

The Summary of Diabetes Self-Care Activities Scale (Toobert & Glasgow, 1994; Bujang et al., 2016), a 11-item questionnaire measures the frequency of completing different self-care regimen activities over the preceding seven days. All items validated and reliability tested except for smoking status which is in dichotomous response (no/yes). For scoring, general diet = mean number of days for items 1 and 2; specific diet = mean number of days for items 3, and 4, reversing item 4 (0=7, 1=6, 2=5, 3=4, 4=3, 5=2, 6=1, 7=0). Given the low inter-item correlations for this scale, using the individual items is recommended. Exercise = Mean number of days for items 5 and 6; Blood-Glucose Testing = Mean number of days for items 7 and 8; Foot-Care = Mean number of days for items 9 and 10; Smoking Status = Item 11 (0 = non-smoker, 1 = smoker), and number of cigarettes smoked per day.

Social Support will be measured using the Malay version of Medical Outcomes Study Social Support Survey, which consists of four dimensions/subscales (emotional, tangible support, positive social interaction and affectionate support) and 19 items (Norhayati et al., 2015). Both the English and the Malay versions has good reliability (α= 0.91 and α=0.96 respectively). Responses were summed to create a total score ranging from 0 to 100, with the higher score indicating greater outcome expectations. Scores were rescaled to a 0 to 100 on a ratio scale, with higher scores indicating a higher social support. The original instrument showed acceptable reliability (α > 0.91).

Self-efficacy will be measured by the the Diabetes Empowerment Scale, which is a 8-item short form of questionnaire, measures the psychosocial self-efficacy of people with diabetes (Anderson et al., 2003) and evaluate the empowerment levels of individuals in relation to their state of health. The result of the scale obtains by the average of the sum of all included items, in which higher values are related to higher perceptions of psychosocial self-efficacy. The coefficient of Cronbach's alpha of 0.84 was obtained and the unidimensional nature of the scale was confirmed.

The Malay Version Brief Patient Health Questionnaire (Shaaban, 2005) is a 9-item depression scale measures the level of depression. Each question has scale from 0-3 reflecting the severity of the symptoms. The possible total score ranges from 0-27. The total score greater than 10 had a sensitivity and specificity of 88% for major depressive disorder. Reliability and validity of the scale has indicated a sound psychometric property with high internal consistency. Scores of 5, 10, 15, and 20 represented mild, moderate, moderately severe, and severe depression, respectively.

Electronic medical record of the hospital

Electronic medical record of the hospital

Electronic medical record of the hospital

Electronic medical record of the hospital