a Post-graduate Program in Endocrinology, Universidade Federal do Rio Grande do Sul - Hospital de Clínicas de Porto Alegre. 2350, Ramiro Barcelos Street, building 21. Porto Alegre 90035-003, RS, Brazil.
b Post-graduate Program in Endocrinology, Universidade Federal do Rio Grande do Sul, Porto Alegre 90035-003, Brazil.
Appl Physiol Nutr Metab. 2018 Jul;43(7):684-690. doi: 10.1139/apnm-2017-0630. Epub 2018 Feb 6.
The purpose of this study was to evaluate the distribution, prevalence, and correlates of excessive screen time (>2 h/day) among Brazilian adolescents. The Study of Cardiovascular Risks in Adolescents (ERICA) is a national, school-based, cross-sectional multicenter study. Information about time spent in front of screens was assessed by questionnaire. Poisson regression models were used to examine the associations between following correlates (region, sex, age, skin color, income, Internet access, and number of TVs at home) and excessive screen time. A total of 66 706 Brazilian adolescents (aged 12-17 years) were included. The overall mean time in front of screens was 3.25 h/day (95% confidence interval (95%CI): 3.20-3.31) and the prevalence of excessive screen time was 57.3% (95%CI: 55.9-58.6). Moreover, excessive screen time also differs across Brazilian regions, being higher in Southeast and South, respectively. In adjusted models stratified by region, the socioeconomic status was associated with excessive screen time in North, Northeast, and Midwest. In all regions, having a computer with Internet access was associated with higher prevalence of excessive screen time. In conclusion, prevalence of excessive screen time in Brazilian adolescents is high. It presents regional variations and facility for Internet access.
本研究旨在评估巴西青少年过度使用屏幕（>2 小时/天）的分布、流行率和相关因素。青少年心血管风险研究（ERICA）是一项全国性的、基于学校的、横断面多中心研究。通过问卷评估了青少年花在屏幕前的时间。采用泊松回归模型检验了以下相关因素（地区、性别、年龄、肤色、收入、上网情况和家中电视数量）与过度使用屏幕时间之间的关联。共纳入 66706 名巴西青少年（年龄 12-17 岁）。总体平均屏幕时间为 3.25 小时/天（95%置信区间（95%CI）：3.20-3.31），过度使用屏幕时间的流行率为 57.3%（95%CI：55.9-58.6）。此外，巴西不同地区的过度屏幕时间也存在差异，东南部和南部的比例较高。在按地区分层的调整模型中，社会经济地位与北部、东北部和中西部的过度屏幕时间有关。在所有地区，拥有带互联网接入的计算机与过度使用屏幕时间的更高流行率相关。总之，巴西青少年过度使用屏幕的流行率很高。它具有地域差异和互联网接入设施。
