Effect of intervention programs in schools to reduce screen time: a meta-analysis

• Main Authors: Roberta Roggia Friedrich, Jéssica Pinto Polet, Ilaine Schuch, Mário Bernardes Wagner
• Format: Article
• Language: English
• Published: Elsevier 2014-06-01
• Series: Jornal de Pediatria
• Subjects: Criança; Adolescente; Saúde escolar; Estilo de vida sedentário
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0021-75572014000300232&lng=en&tlng=en

OBJECTIVE: to evaluate the effects of intervention program strategies on the time spent on activities such as watching television, playing videogames, and using the computer among schoolchildren. SOURCES: a search for randomized controlled trials available in the literature was performed in the following electronic databases: PubMed, Lilacs, Embase, Scopus, Web of Science, and Cochrane Library using the following Keywords randomized controlled trial, intervention studies, sedentary lifestyle, screen time, and school. A summary measure based on the standardized mean difference was used with a 95% confidence interval. DATA SYNTHESIS: a total of 1,552 studies were identified, of which 16 were included in the meta-analysis. The interventions in the randomized controlled trials (n = 8,785) showed a significant effect in reducing screen time, with a standardized mean difference (random effect) of: -0.25 (-0.37, -0.13), p < 0.01. CONCLUSION: interventions have demonstrated the positive effects of the decrease of screen time among schoolchildren.