The evaluation of the quantitative studies will be performed in three ways: 1) Process evaluation, that will focus on intermediate outcomes such as knowledge, attitudes, motivation and readiness for change. 2) Effect evaluation will be used to evaluate the effect of the intervention programme on the subjects' behavior such as dietary intake and physical activity level. 3) Outcome evaluation will measure the total effect of the intervention programme, in this case variables that measures indicators for health and disease, such as SF-36, EQ-5D, SHIS, serum cholesterol, blood pressure, BMI, waist circumference etc.