Effectiveness of Screen-Time Interventions on BMI, Daily Screen Use and Diet Behaviours in Preschool Children: A Systematic Review and Meta-Analysis of Randomised Controlled Trials
Song S, Hua X, An B
Child: care, health and development · 0 citas
Etiquetas de revisión
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Cómo se estudió
- Diseño
- Metaanálisis (indexado por PubMed)
- Estudiado en
- Personas
- Resultado principal
- Marcadores de salud y funcionamiento
Quién lo pagó
- Financiación
- Financiación no declarada
Publicación
- Publicado
- 2026-01-01 · Child Care Health Dev · vol. 52 · número 3 · pág. e70280
- Editorial
- Wiley
- Citado
- 0 citas · más que el 15% de estudios similares · 0.0× el promedio de su campo
- Referencias
- 28 trabajos
- Acceso
- De pago
- Áreas de investigación
- Child Development and Digital Technology · Obesity, Physical Activity, Diet · Physical Activity and Health
- Palabras clave
- preschool children, body mass index, childhood obesity, daily screen time, parent education, home-based programs, digital interventions, age and sex differences, family-centered intervention
- MeSH
- humans, body mass index, diet, feeding behavior, child, child, preschool, female, male, randomized controlled trials as topic, pediatric obesity, screen time, digital media
3 autores
- Shuqing Song🇨🇳 · autor de correspondenciaShanxi Normal University
- Xuehui Hua
- Baozhen An🇨🇳Shanxi Normal University
Resumen
El texto original del estudio, en el idioma en que se publicó.
Objective
This study aimed to systematically review and quantitatively synthesise the effects of screen-time-focused interventions on body mass index (BMI), daily screen time and diet-related behaviours among preschool children.
Methods
A PRISMA 2020-compliant systematic review and meta-analysis of randomised controlled trials (RCTs) involving children aged 2-6 years was conducted. Eligible trials targeted screen use via parent education, home-based programs, technology-assisted restriction or digital/app-based interventions, reporting ≥ 1 outcome (BMI, daily screen time or diet). Searches were performed in PubMed, Web of Science, Embase and Scopus. Risk of bias was assessed with RoB 2. Random-effects meta-analyses with Hartung-Knapp adjustment were performed, and heterogeneity (I2, τ2), sensitivity analyses, funnel plots and meta-regression were used to evaluate robustness and moderators.
Results
Ten RCTs including approximately 2800 preschool children were analysed. Screen-time interventions resulted in a small but statistically significant reduction in BMI compared with controls (MD = -0.18 kg/m2; 95% CI - 0.33 to -0.03; I2 = 92.7%). Reductions in daily screen time favoured intervention groups but were not statistically significant (MD = -27.2 min/day; 95% CI - 66.9 to 12.5; I2 = 99.2%). No consistent improvements were observed for diet-related behaviours. Sensitivity analyses confirmed the robustness of BMI findings. Meta-regression indicated that BMI effects were attenuated in studies with higher proportions of girls, whereas screen-time reductions were greater among older preschool children.
Conclusions
Screen-time interventions in preschool children yield modest BMI benefits but inconsistent effects on screen use and diet. Age- and sex-related differences in responsiveness highlight the need for tailored, family-centred intervention strategies.
Resumen vía Europe PMC. Los derechos de autor siguen siendo de los autores o la editorial.
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