Social network effect on self-rated health in type 2 diabetic patients – results from a longitudinal population-based study

Summary Objectives: The aim is to analyse the association between social network and self-rated health in a longitudinal design for persons with type 2 diabetes, comparing them with persons without diabetes. Methods: The analyses are based on data from the population-based ‘KORA-A study’ conducted in the region of Augsburg (Germany), with data from 1990/1995 ( t 0 ) and 1998 ( t 1 ), including 164 persons with type 2 diabetes and 207 persons without diabetes. The social network was assessed by the Berkman/Syme index. Results: For the type 2 diabetes group, the multivariate analyses show that a high score of social network at t 0 is associated with good self-rated health at t 1 , even if self-rated health at t 0 is included in the model (OR 2.69; 95 % CI: 1.21–5.98). For the non-diabetes group, no such association was found. Conclusions: The results point towards a ‘buffer effect’ of the social network, indicating that the positive effect on health can be seen mostly among those who are exposed to a high level of burden, in this case exposed to a chronic disease such as type 2 diabetes.