Time-series analysis of the consumption of sweetened soft drinks among adults in Brazil: 2007 to 2014

Abstract The scope of this article is to analyze the time-series trend and factors associated with the consumption of soft drinks or packaged fruit juices among adults in Brazil. It is a study based on secondary data from the System of Surveillance of Risk Factors and Protection for Chronic Diseases by Telephone Survey conducted among Brazilian adults between 2007 and 2014. The consumption frequency and intensity (number of cups or cans per week) of soda or packaged juice was checked. Socio-demographic and behavioral data were the independent variables. The time-series trend of annual consumption was evaluated by means of Linear Regression. The factors (age, sex, region, work, schooling and TV screen time) associated with the consumption of these beverages were investigated by Poisson regression. There was a 32.7% reduction in soft drink or packaged juice consumption between 2007 and 2014. Factors associated with higher consumption were: male sex (p = 0.000); 18-29 year-age-range (p = 0.000); residence in the central-west, southeast and southern regions (p = 0.000); lower schooling (p = 0.616); being employed (p = 0.007) and more than 3 hours of TV screen time per day (p = 0.000). The analyses describe a downward trend in the consumption of soda or packaged fruit juice among adults in Brazil from 2007 to 2014.

摘要 本文旨在分析巴西成年人软饮料及包装果汁消费量的时间序列趋势及其相关影响因素。本研究采用2007至2014年间针对巴西成年人开展的慢性病风险因素与保护因素电话调查监测系统（System of Surveillance of Risk Factors and Protection for Chronic Diseases by Telephone Survey）的二手数据展开分析。研究统计了苏打水或包装果汁的饮用频率与强度（每周饮用杯数或罐数），以社会人口学及行为学数据作为自变量。通过线性回归分析评估年度消费量的时间序列趋势，并采用泊松回归探究与这类饮品消费相关的影响因素（年龄、性别、所在地区、职业、受教育程度及每日电视屏幕时长）。2007至2014年间，巴西成年人的软饮料及包装果汁消费量下降了32.7%。与更高消费量相关的影响因素包括：男性（p=0.000）、18~29岁年龄段（p=0.000）、居住在中西部、东南部及南部地区（p=0.000）、受教育程度较低（p=0.616）、处于在职状态（p=0.007）以及每日电视屏幕时长超过3小时（p=0.000）。本研究分析结果表明，2007至2014年间巴西成年人的苏打水及包装果汁饮用量呈下降趋势。