Document Type : Original Article
Authors
1
Student Research Committee, Yasuj University of Medical Sciences, Yasuj, Iran;
2
Social Determinants of Health Research Center, School of Nursing, Yasuj University of Medical Sciences, Yasuj, Iran;
3
Department of Nutrition, School of Health and nutrition, Yasuj University of Medical Sciences, Yasuj, Iran;
4
Student Research Committee, shiraz University of Medical Sciences, Shiraz, Iran
10.30476/ijcbnm.2026.104143.2608
Abstract
Background: Colorectal cancer in relatives with a positive family history is more common than in other people, probably due to environmental factors, genetics, and lifestyle. Education based on Pender’s Health Promotion Model (HPM) on nutritional behavior may be helpful. This study was conducted to determine the effect of interventions based on Pender’s HPM on preventive nutritional behaviors of colorectal cancer and other constructs of the model in first-degree relatives of individuals with colorectal cancer.
Methods: This is a randomized controlled trial study conducted on 136 first-degree family members of colorectal cancer patients (68 in each intervention and control groups) who were referred to Nemazee, Faghihi, and Amir Hospitals affiliated with Shiraz University of Medical Sciences, Shiraz, Iran, from March 2017 to August 2019. An educational intervention (four sessions weekly) based on the Pender model was designed and implemented. The data collection instrument was a nutritional behaviors inventory based on Pender’s HPM for colorectal cancer prevention. It was a researcher-made inventory that was filled in before (week 0) and 12 weeks after 4 weeks of the intervention (week 16), by the participants. The data were analyzed using SPSS software version 19.0; we used independent sample t-test, Paired t-test, ANCOVA, Pearson correlation, and Chi-square tests. A P value < 0.05 was considered statistically significant.
Results: There was significant improvement in the mean score of nutritional behavior and other constructs of the model in the intervention group compared to the control (P=0.001) exception to the positive affection, which showed no significant between-group difference (P=0.453). Within-group comparison of the mean score of nutritional behavior in the intervention group showed a significant increase after completion of the follow-up (P=0.001), but the effect was not observed in the control group (P=0.788).
Conclusion: The intervention based on Pender’s HPM can improve nutritional behavior in firstdegree family members of patients with colorectal cancer. This model is recommended to be used by healthcare personnel.
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