Universidade Federal do Piauí - Teresina (PI), Brazil.
Universidade da Integração Internacional da Lusofonia Afro-Brasileira - Fortaleza (CE), Brazil.
Rev Bras Epidemiol. 2022 Jun 1;25:e220013. doi: 10.1590/1980-549720220013. eCollection 2022.
To analyze the temporal trend of simultaneous occurrence of behavioral risk factors for chronic non-communicable diseases in Brazilian school adolescents.
Ecological time-series study that analyzed data from the three editions of the National Survey of School Health with students in the 9th year of public and private schools. Cluster analysis was performed to identify the simultaneity of the following factors: irregular consumption of fresh or minimally processed foods, regular consumption of processed and ultra-processed foods, insufficient level of physical activity during leisure time, consumption of alcoholic beverages, use of cigarettes and illicit drugs. The cluster trend was tested using simple linear regression.
The sample was composed of 173,310 school adolescents. Sixty-four possible combinations were evaluated, resulting in the formation of six clusters. The grouping formed by all factors showed the highest ratios observed/expected prevalence in the last two years of the series. The highest ratios were observed for combinations in which alcohol and cigarettes were present. These substances integrated five of the six clusters. One of the groups (insufficient level of physical activity during leisure time + consumption of alcoholic beverages + use of cigarettes and illicit drugs) had an upward trend throughout the series.
The trend analysis showed four out of six clusters remaining stable throughout the series, which shows that the factors are persistently present among school adolescents.
分析巴西青少年同时出现慢性非传染性疾病行为风险因素的时间趋势。
本研究为生态时间序列研究，分析了来自三版全国学校卫生调查的数据，对象为公立和私立学校 9 年级的学生。采用聚类分析来识别以下因素的同时出现情况：不规则食用新鲜或最低限度加工食品、经常食用加工和超加工食品、闲暇时间体力活动不足、饮酒、吸烟和使用非法药物。采用简单线性回归检验聚类趋势。
样本由 173310 名在校青少年组成。评估了 64 种可能的组合，形成了 6 个聚类。所有因素组成的分组在前两年的系列中观察到了最高的比值。观察到的比值最高的组合是同时存在酒精和香烟的组合。这两种物质构成了六个聚类中的五个。其中一个组（闲暇时间体力活动不足+饮酒+吸烟和使用非法药物）在整个系列中呈上升趋势。
趋势分析显示，六个聚类中有四个在整个系列中保持稳定，这表明这些因素在在校青少年中持续存在。
