Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-graduação em Endocrinologia, Porto Alegre, RS, Brazil.
Universidade Federal do Rio Grande do Sul (UFRGS), Programa de Pós-graduação em Endocrinologia, Porto Alegre, RS, Brazil.
J Pediatr (Rio J). 2019 Mar-Apr;95(2):155-165. doi: 10.1016/j.jped.2018.04.011. Epub 2018 Jun 1.
To evaluate the prevalence of excessive screen-based behaviors among Brazilian adolescents through a systematic review with meta-analysis.
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.
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.
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.
通过系统评价和荟萃分析评估巴西青少年过度屏幕行为的流行率。
系统评价和荟萃分析记录在国际前瞻性注册持续系统评价（PROSPERO-CRD 2017 CRD42017074432）中。本综述包括通过间接或直接方法评估 10 至 19 岁青少年过度屏幕时间（即涉及不同屏幕行为的组合）或电视观看（≥2 小时/天或在屏幕前>2 小时/天）的观察性研究（队列或横断面研究）。研究策略包括以下数据库：MEDLINE、LILACS、SciELO 和 ADOLEC。搜索策略包括“屏幕时间”、“巴西”和“流行率”的术语。随机效应模型用于估计不同类别中过度屏幕时间的流行率。
在搜索中确定的 775 项研究中有 28 项符合纳入标准。过度屏幕时间和电视观看的流行率分别为 70.9%（95%CI：65.5-76.1）和 58.8%（95%CI：49.4-68.0）。这两种分析中，性别之间没有差异。大多数纳入的研究显示出低偏倚风险。
巴西青少年过度屏幕时间和电视观看的流行率很高。需要采取干预措施来减少青少年过度的屏幕时间。
