... 24 months of follow-up.Sample sizeFor an alpha of 0.05, a power of 80%, and in order todetect an reduction of HbA1c of 0.3 percentage units, with a common standard deviation (SD) of 1.15, in ... ARTICLE Open Access Effectiveness of PRECEDE model for healtheducation on changes and level of control of HbA1c, blood pressure, lipids, and body massindex in patients with type 2 diabetes ... of 7% in the risk of mortality owing to cardiovascular dis-ease, and 10% in the risk of mortality owing to ictus with every 2 mmHg decrease in SBP.The slight decrease in the lipid profile of...