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Introduction: World health organization has proclaimed the prevalence of smoking among 15 years old European region students, more than 24 percent. The cigarette smoking indicator in our country among over 15 years old individuals is 11.9 percent and in the province under survey is 15.6 percent. This research has been performed in order to study the effect of health education program based on health belief model (H.B.M) on preventive actions of smoking in middle school students. Materials and Methods: This is a quasi-experimental study, done on 248 students of grade one in middle schools of Boukan city (119 boys and 129 girls) that were randomly divided into experimental and control groups. Data collection tool was a questionnaire including 77 questions based on health belief model (perceived susceptibility, perceived severity, perceived benefits and perceived barriers to smoking, and cues to action) and preventive actions of smoking. After data collection in the first stage, action was taken with regard to educational intervention and then in the second stage (after the intervention), data was collected again. Data was analyzed using T test. Results: Results showed that the mean score of all parts of health belief model in experimental group(except for perceived barriers) after educational intervention compared to before intervention was increased significantly and also the mean score of all parts of HBM after intervention was significantly increased in experimental group compared to control group. Conclusion: The results of this survey show that by increasing the score of health belief model parts including, perceived susceptibility, perceived severity and perceived benefits, adopting preventive actions of smoking also increases. Therefore, the results of this survey confirm the efficiency of health belief model in adopting preventive actions of smoking.

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Abstract Background: Over 2 billion world people suffer from iron deficiency. Teenager girls are one of vulnerable groups in this area. Health education with various methods is a suitable tool for motivating and modifying incorrect function. The purpose of this research was determining the effect of health education program base on PRECEDE Model for controlling iron- deficiency anemia. Materials and Methods: This quasi-experimental and two-phase study was done on 72 students placed into case and control groups in 2007-8. Intervention was done in three sections with 45 minutes and 3 months after educational intervention was followed. Questionnaire base on PRECEDE Model parts and blood lab exams (Hb, Hct, Feritin) were data gathering tool. Data were analyzed by pair T- test, independent T- test, Mann- Whitney and Chi- square tests. Results: The mean score of knowledge (p<0.001) and attitude (p<0.001) (Predisposing factors), Using educational resources, taking place educational class and participating in educational programs (Enabling factors), encourage family and teachers (Reinforcing factors) and iron deficiency anemia preventive behaviors had a significant increase in the case group after the educational intervention. Conclusion: Above results indicate positive effect of educational intervention program base on PRECEDE Model and main components (Predisposing, Enabling, Reinforcing factors) in improving of iron deficiency anemia preventive behaviors in the study population.

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Background: The consumption of hydrogenated vegetable oils, rich sources of both saturated fatty acids and trans fatty acids, is one of the most important risk factors for cardio-vascular diseases(CVD). The aim of this randomized semi-experimental control study was to modify the consumption habits of vegetable oils among families under the cover of health centers of Khomeini city. Materials and Methods: 136 adult women living in Khomein and Mohallat were randomly allocated to case and control groups. Data gathering instrument was a questionnaire based on PRECEDE framework. The educational intervention was weekly conducted in three 60-90 minute sessions based on the PRECEDE framework constructs for two months. Results: Mean scores of predisposing (knowledge and attitude), reinforcing, and enabling factors showed a significant difference in the case group in comparison to the control group(p<0.05). Also, hydrogenated vegetable oils consumption in case group decreased from 72% to 63% , whereas liquid vegetable oils consumption increased from 28% to 37%(p<0.05). Conclusion: Planning and implementation of an educational intervention program based on PRECEDE framework can be effective in reduction of hydrogenated vegetable oils consumption.

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Background: The purpose of this study was to identify the effect of health education according to health belief model (HBM) on the adoption of preventive behaviors of infection with giardia lamblia by primary school students in Arak. Materials and Methods: In a randomized quasi-experimental case study, 1200 students were randomly divided into two equal groups of test (instruction) and control (non-instruction). The sample size for giardiosis identification tests included 300 students, who had been equally and randomly selected from the control and test groups. Health education was according to HBM and its impact on the students' lifestyle-related patterns of behavior was considered. Results: Paring nails in the test group, significantly increased after education while it decreased significantly in the control group. The number of students who carried a glass for drinking slightly increased, but it remarkably decreased in the control group. The number of students who applied soap after using the restrooms remarkably increased in both the test and control groups. The relationship between not paring nails and infection with giardia lamblia was statistically significant. Additionally, after education, the ratio of reduction of infection with giardia lamblia in the test group to its increase in the control group was statistically significant. Conclusion: Preventive behaviors significantly improved and appeared influential in the reduction of infection with giardia lamblia. Thus, using a HBM in prevention of parasitic infections along with instructing the parents are suggested for prevention of parasitic infections.