[Nutritional factors influencing the incidence of new dialysis due to diabetes mellitus in each prefecture of Japan].

There are regional differences in the incidence of new dialysis in Japan. We investigated nutritional factors that might influence the incidence of new dialysis due to diabetes mellitus(DM)in each prefecture. We analyzed the data reported for 47 prefectures in the National Nutrition Survey 1995-1999 (n = 38,003), and the Japanese Society for Dialysis Therapy 2005-2007 (n = 45,033). Ecological regression was assessed using univariate regression analysis. Univariate analysis showed that body mass index (BMI) (r = 0.296, p = 0.022), intake of fish and shellfish (r = -0.254, p = 0.043), meat (r = 0.275, p=0.031), energy (r = -0.280, p = 0.028), carbohydrates (r = -0.283, p = 0.027), calcium (r = -0.278, p = 0.029), iron (r = -0.338, p = 0.010), salt (r = -0.288, p = 0.025), vitamin B2 (r = -0.279, p = 0.029), and vitamin C (r = -0.302, p = 0.020) were correlated with the incidence of new dialysis due to DM. The incidence of new dialysis due to DM in each prefecture may be influenced by environmental factors, including nutritional factors.