Social capital - a neglected issue in diabetes control: a cross-sectional survey in Iran.

Glycaemic control is an essential component in diabetes management. There is growing attention on the protective effects of social capital on health, where social capital comprises features of society that facilitate co-operation for mutual benefit. The aim of this study was to investigate its role as a social determinant of health in the glycaemic control of diabetes mellitus. A cross-sectional study was conducted in a diabetes care charity institute, Isfahan, Iran from July 2010 to September 2010. Based on the level of HbA1c, all patients were divided into two groups: HbA1c level ≤ 7 as controlled diabetes and HbA1c level > 7 as uncontrolled diabetes. Sixty patients were randomly selected from each group (controlled diabetes and uncontrolled diabetes) and all agreed to participate. Social capital was measured using the Integrated Questionnaire for the Measurement of Social Capital (SC-IQ). The mean age of participants in the controlled diabetes group was 51.3 (SD: 7.8) years and 50.1(SD: 7.2) in the uncontrolled group. The mean social capital score was 185.1 (CI 95% 181.4-188.6) in the controlled group and 175.4 (CI 95% 171.8-178.8) in the uncontrolled group. There was a significant negative correlation between empowerment and political action and trust and solidarity dimensions and the level of HbA1c. In multiple regression analysis, trust and solidarity and empowerment and political action were significant predictors of the HbA1c. The results of this study suggest that social participation, trust, and empowerment and political action may determine how effectively the patient's diabetes has been managed. This initial finding warrants subsequent experimental investigations designed to identify strategies that can be used to foster the creation of social capital to improve diabetes control.