Camila W Schaan1, Felipe V Cureau2, Mariana Sbaraini3, Karen Sparrenberger2, Harold W Kohl Iii4, Beatriz D Schaan5. 1. Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-graduação em Endocrinologia, Porto Alegre, RS, Brazil. Electronic address: cschaan@hcpa.edu.br. 2. Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-graduação em Endocrinologia, Porto Alegre, RS, Brazil. 3. Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-graduação em Ciências da Saúde: Cardiologia e Ciências Cardiovasculares, Porto Alegre, RS, Brazil. 4. University of Texas at Austin, University of Texas Health Science Center - Houston, Michael and Susan Dell Center for Healthy Living, Austin, United States; University of Texas at Austin, Department of Kinesiology and Health Education, Austin, United States. 5. Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-graduação em Endocrinologia, Porto Alegre, RS, Brazil; Hospital de Clínicas de Porto Alegre, Serviço de Endocrinologia, Porto Alegre, RS, Brazil.
Abstract
PURPOSE: To evaluate the prevalence of excessive screen-based behaviors among Brazilian adolescents through a systematic review with meta-analysis. DATA SOURCE: Systematic review and meta-analysis were recorded in the International Prospective Register of Ongoing Systematic Reviews (PROSPERO-CRD 2017 CRD42017074432). This review included observational studies (cohort or cross-sectional) that evaluated the prevalence of excessive screen time (i.e. combinations involving different screen-based behaviors) or TV viewing (≥2h/day or >2h/day in front of screen) through indirect or direct methods in adolescents aged between 10 and 19 years. The research strategy included the following databases: MEDLINE, LILACS, SciELO and ADOLEC. The search strategy included terms for "screen time", "Brazil", and "prevalence". Random effect models were used to estimate the prevalence of excessive screen time in different categories. DATA SUMMARY: Twenty-eight out of 775 studies identified in the search met the inclusion criteria. The prevalence of excessive screen time and TV viewing was 70.9% (95% CI: 65.5-76.1) and 58.8% (95% CI: 49.4-68.0), respectively. There was no difference between sexes in both analyses. The majority of studies included showed a low risk of bias. CONCLUSIONS: The prevalence of excessive screen time and TV viewing was high among Brazilian adolescents. Intervention are needed to reduce the excessive screen time among adolescents.
PURPOSE: To evaluate the prevalence of excessive screen-based behaviors among Brazilian adolescents through a systematic review with meta-analysis. DATA SOURCE: Systematic review and meta-analysis were recorded in the International Prospective Register of Ongoing Systematic Reviews (PROSPERO-CRD 2017 CRD42017074432). This review included observational studies (cohort or cross-sectional) that evaluated the prevalence of excessive screen time (i.e. combinations involving different screen-based behaviors) or TV viewing (≥2h/day or >2h/day in front of screen) through indirect or direct methods in adolescents aged between 10 and 19 years. The research strategy included the following databases: MEDLINE, LILACS, SciELO and ADOLEC. The search strategy included terms for "screen time", "Brazil", and "prevalence". Random effect models were used to estimate the prevalence of excessive screen time in different categories. DATA SUMMARY: Twenty-eight out of 775 studies identified in the search met the inclusion criteria. The prevalence of excessive screen time and TV viewing was 70.9% (95% CI: 65.5-76.1) and 58.8% (95% CI: 49.4-68.0), respectively. There was no difference between sexes in both analyses. The majority of studies included showed a low risk of bias. CONCLUSIONS: The prevalence of excessive screen time and TV viewing was high among Brazilian adolescents. Intervention are needed to reduce the excessive screen time among adolescents.
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