Effectiveness and acceptability of a novel school-based healthy eating program among primary school children in urban Sri Lanka.

BACKGROUND: Obesity rates are rising rapidly in low-middle-income-countries (LMICs). School-based interventions have shown moderate efficacy in improving diet and lifestyle associated with obesity in high-income countries. However, there is little data available on effective interventions suitable for LMICs. We devised a novel program for primary school children including a simple storybook and sticker-based food-diary (FD) and conducted a pilot study to evaluate the acceptability and short-term effectiveness of the program. METHODS: This pre-post intervention study included grade 1 and 2 students from four public schools in Colombo, Sri Lanka. Weight and height were assessed, and participating children self-monitored their diet using sticker-based FDs for one week at baseline (pre-test). The following week, class teachers discussed the storybook, which incorporated the benefits/disadvantages of a healthy/unhealthy diet and lifestyle in classrooms. At the end of the intervention, participating children were self-monitoring their diet again for a week (post-test). A simple scoring system was used to derive a weekly score based on the healthiness of the meals consumed each week (FD-score). The primary outcome of the study was change in eating habits following the story book discussion (post-test FD score - pre-test FD score). Acceptability and effectiveness were also assessed by anonymized feedback questionnaires for parents and teachers. RESULTS: One thousand and forty-two students completed the program. There was an improvement in eating habits of participating children, with FD scores improving by 12% from 51 ± 23 at baseline to 63 ± 24 following the intervention (p < 0.001). Further, when considering BMI category of participants: 69.1% were normal weight (NW), 18.3% underweight (UW), 7.4% overweight (OW) and 5.2% obese (OB). Improvement in eating habits were seen among children of all BMI categories (change in FD-score: UW 13.2%, NW 12.3%, OW 10.4% and OB 12.4% (p < 0.001)). Furthermore,> 90% parents(n = 1028) and > 95% teachers(n = 39) strongly agreed/agreed that the intervention was easy to implement, motivated children and led to an observable improvement in healthy eating. CONCLUSION: This novel program led to an immediate improvement in eating habits and was well accepted by parents and teachers making it a potentially suitable intervention for wider implementation in primary schools in urban Sri Lanka.

Improved food habits and anthropometry among primary school children following a novel healthy eating programme.

OBJECTIVE: Assess longer-term changes in food habits and anthropometry among Grades 1-2 primary school students from four public schools in Colombo, Sri Lanka, following a 3-week programme including a classroom-based motivational storybook discussion and self-monitoring food diary (FD). METHODS: This follow-up study assessed changes from baseline (pre-intervention) BMI z-scores and food habits (increased healthy food-item consumption/decreased unhealthy food-item consumption reflected by an increase in FD score) and parental perceptions (anonymous questionnaires) among 863 students (aged 6-8 years), between 9 and 12 months after completing the programme (November 2019-February 2020). RESULTS: Food habits showed sustained improvement from baseline mean FD score (baseline vs. follow-up: 51 ± 23% vs. 67 ± 22%, p < 0.001), with children from all BMI subgroups (underweight [UW], normal weight [NW], overweight [OW] and obesity [OB]) showing a significant increase in FD scores (ranging from 14.1% to 17.2%, p < 0.001). BMI z-scores increased in children living with UW (-2.85 to -2.21, p < 0.00) and NW (-0.70 to -0.57, p < 0.001), but did not change in children with OW (+1.5 to +1.49, p = 0.83) and OB (+2.85 to +2.21, p = 0.19). Most parents (n = 497, 97.8%) reported satisfaction with programme outcomes. CONCLUSION: This programme led to sustained improvement in food habits among young primary school children from all BMI categories, increase in BMI towards the median among children living with UW and NW, and stabilization of BMI in children with OW and OB, suggesting it as a useful tool for improving nutritional status of young children in low- and middle-income countries (LMIC) facing the double burden of under- and overnutrition.