Background. People with pre-diabetes often lack knowledge of their risks of developing diabetes. In one of our previous study, Multi-Approach Health Education was shown evidence to be effective on health behavior of reducing risks of developing diabetes. However, which one approach is really effective and efficient need further investigation. Purpose. To examine the effects of different intervention strategies on diabetes prevention knowledge, exercise, dietary behavior, and physiological indicators for people with pre-diabetes. Methods. This was a randomly controlled trial. People who received health examination and were found fasting blood glucose higher than normal, between 100 - 125 mg/dl in 2011 were recruited. Three types of intervention were randomly assigned to 3 groups respectively. The control group (n=51) received a health education lecture. One experimental group (n=48) received the identical lecture plus telephone encouragement. The second experimental group (n=41) received the identical lecture plus a health reminder poster in their daily life. The outcomes were evaluated for the change in knowledge of diabetes prevention, exercise behavior, dietary behavior, and physiological outcomes at 6 and 12 weeks after the lecture of three groups, respectively. Results. Three intervention strategies were equally efficacious at inducing positive behavioral changes but overall the magnitudes of physiological changes were the same. In general, the maximum change in parameters was achieved after 6 weeks and maintained in the second 6 weeks of the study. Conclusions. Educating people with pre-diabetes about their condition can have a positive effect upon their health behaviors. However, education lecture coupled with a telephone follow up or plus educational posters were found no more effective than lecture alone. The lecture alone of health education may be enough for people with pre-diabetes, but the long term effect needs further investigation
