Poster Topical Area: Nutrition Education and Behavioral Sciences
Poster Board Number: 203
Objectives: To assess the effectiveness of the Shaping Healthy Choices Program (SHCP) in improving nutrition knowledge in 4th-6th grade youth and to pilot an extender model of nutrition education in the SHCP.
Methods: Nutrition knowledge was assessed pre and post with a 35-item questionnaire. In 14 classrooms, pre and post scores were unmatched; aggregate nutrition knowledge was assessed with unpaired t-tests. An extender model was piloted in 4 classrooms, and was compared to direct education (4 classrooms) and control (1 classroom receiving no SHCP). The same questionnaire was used; individual data were matched pre and post. Height and weight were assessed pre and post and BMI percentile calculated. Paired t-tests and Analysis of Covariance (ANCOVA) measured differences in nutrition knowledge and BMI percentile using SPSS 24.
Results: In the aggregate nutrition knowledge group, 368 and 373 students completed pre- and post-tests, respectively. Nutrition knowledge increased from pre (20.3+3.9) to post (21.8+4.5; p<.001). In the extender pilot, 147 students completed pre and post nutrition knowledge (direct education n=47, extender n=75, control n=25). Nutrition knowledge increased from pre to post in the direct education (pre=17.7+4.1; post=21.0+5.4; p<.001), and extender (pre=20.7+3.6; post=23.1+3.5; p<.001) groups, but not in the control group (pre=21.3+3.9; post=22.4+3.9; p=.213); ANCOVA yielded no significant difference between groups (p=.249). Pre and post anthropometric data were collected from 138 students (direct education n=46, extender n=70, control n=22). BMI percentile decreased from pre to post in the direct education group (pre=78.8+21.46; post=74.0+21.5; p=.01), but not in the extender (pre=85.3+17.9; post=83.9+20.3; p=.82) or control groups (pre=73.6+27.9; post=73.4+27.3; p=.86). ANCOVA yielded a significant difference between the three groups at post (p=.024). Post-hoc analysis indicated the direct education group experienced a decrease in BMI percentile compared to control (p=.042).
Conclusions: The SHCP is effective in increasing nutrition knowledge, including in the extender model. These data indicate that BMI percentile did not improve in the extender group, however it is possible the uneven samples between groups may have resulted in the non-significant results.
University of California Davis, Department of Nutrition, Center for Nutrition in Schools