Efficacy of the Health Belief Model-Based Intervention of change in Dietary Fat Reduction Among Female High school students
Abstract
This study aims to examine the efficacy of Stage-matched intervention based on the Transtheoretical Model of Behavior Change in dietary fat reduction. The study included high school female students who age 16-18-years. An experimental design using randomized controlled trial was used to guide this study. The study included a simple random sample of 144 female high school students (72 students for the study groups and 72 for the control group). The study instrument includes participants’ sociodemographic characteristics age, family’s socioeconomic status , the Revised 1 Item Stage of Change Algorithm, the Processes of Change Questionnaire, the Decisional Balance Questionnaire, and the 32 Item Situational Temptation Questionnaire. Data were collected using a self-reported instrument. for the period from November 1st, 2021 to April 10th, 2022 Data were analyzed using the statistical package for social science for windows, version 26. The statistical measures of frequency, percent, mean, standard deviation, Repeated Measures Analysis of Variance,and One-way analysis of variance were used.The study results revealed that the administered Transtheoretical Model of Change-Stage-matched intervention moved subjects from lower Stages of Change to higher ones The age mean for participants in the study group is 17.32 ± 1.56 compared to 17.27 ± 1.09 for those in the control group. In the pretest and posttest I, more than a third of participants in the study group were in the Action Stage of Change for eating high-fat food. In the posttest II, less than a half were in the Preparation Stage of Change. There was a significant difference in the Self-Efficacy over time for participants in the study group with an omnibus effect of .789. The stages-matched intervention based on the Transtheoretical Model of Change significantly bettered the Self-Efficacy of reducing dietary fat for participants in the study group.
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