impact of education based on precede model on knowledge, attitude and behavior of grade two guidance school girls regarding iron deficiency anemia (ida) in isfahan, iran

background: iron deficiency anemia (ida) is the most common cause of anemia. it is estimated that about 30% of the world population suffer from it. the highest prevalence of this anemia is in adolescent girls. because of its effects on work efficiency, productivity and development trend, prevention is important. the aim of this study was to determine the effect of applying the precede educational model as a theoretical framework for controlling ida among grade two guidance school girls. methods: this quasi-experimental study was done on 130 students who were allocated to case (65) and control (65) groups randomly in 2010-2011. intervention was done in three 60 minute sessions. the questionnaires were distributed and completed immediately, and three months after educational intervention. a self-administered questionnaire base on the precede model constructs was the data gathering tool. data were analyzed by independent student’s t-test, paired t-test, repeated measure anova, and chi-square statistical tests in spss software version 18. findings: after educational intervention, the mean score of knowledge and attitude  (predisposing factors), using educational resources, organizing educational class, participating in educational programs (enabling factors), encouraging family and teachers (reinforcing factors), and iron deficiency anemia preventive behaviors had a significant increase in the case group in comparison with the control group (p = 0.00). conclusion: the present study indicated that an educational intervention program based on the precede model and main components (predisposing, enabling, and reinforcing factors) have a positive effect in improving iron deficiency anemia preventive behaviors in the study population.