Specification

For each year, the date of the last schooling  which is stored in the table schooling (schulung)   is determined for all patients. The last twelve months before and after those schoolings are then examined to show the progress. In addition to the number of patients, the following data is collected:

•  HbA-.7ex1c-SDS-Median 
• Body mass index SDS  
• Systolic blood pressure SDS
• Diastolic blood pressure SDS
• Sever hypoglycemic episodes per ``100 patient years''.

Patients who are in their first year of diabetes mellitus  have to be ignored, because there is no valid data for the twelve months before this schooling.