da Silva Thiago Luiz Nogueira, Klein Carlos Henrique, Souza Amanda de Moura, Barufaldi Laura Augusta, Abreu Gabriela de Azevedo, Kuschnir Maria Cristina Caetano, de Vasconcellos Mauricio Teixeira Leite, Bloch Katia Vergetti
Instituto de Estudos em Saúde Coletiva, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brasil.
Departamento de Epidemiologia, Escola Nacional de Saúde Pública Sérgio Arouca, Fundação Oswaldo Cruz, Rio de Janeiro, RJ, Brasil.
Rev Saude Publica. 2016 Feb;50 Suppl 1(Suppl 1):3s. doi: 10.1590/S01518-8787.2016050006730. Epub 2016 Feb 23.
OBJECTIVE To describe the response rate and characteristics of people who either took part or not in from the Study of Cardiovascular Risks in Adolescents (ERICA) , according to information subsets. METHODS ERICA is a school-based, nation-wide investigation with a representative sample of 12 to 17-year-old adolescents attending public or private schools in municipalities with over 100,000 inhabitants in Brazil. Response rate of eligible subjects were calculated according to macro-regions, sex, age, and type of school (public or private). We also calculated the percentages of replacement schools in comparison with the ones originally selected as per the sample design, according to the types of schools in the macro-regions. The subjects and non-subjects were compared according to sex, age, and average body mass indices (kg/m2). RESULTS We had 102,327 eligible adolescents enrolled in the groups drawn. The highest percentage of complete information was obtained for the subset of the questionnaire (72.9%). Complete information regarding anthropometric measurements and the ones from the questionnaire were obtained for 72.0% of the adolescents, and the combination of these data with the 24-hour dietary recall were obtained for 70.3% of the adolescents. Complete information from the questionnaire plus biochemical blood evaluation data were obtained for 52.5% of the morning session adolescents (selected for blood tests). The response percentage in private schools was higher than the one in public schools for most of the combination of information. The ratio of older and male adolescents non-participants was higher than the ratio among participants. CONCLUSIONS The response rate for non-invasive procedures was high. The response rate for blood collection - an invasive procedure that requires a 12-hour fasting period and the informed consent form from legal guardians - was lower. The response rate observed in public schools was lower than in the private ones, and that may reflect lower school frequency of registered students.
目的 根据信息子集描述参与或未参与青少年心血管风险研究（ERICA）的人群的应答率及特征。方法 ERICA是一项基于学校的全国性调查，对巴西居民超过10万的城市中公立或私立学校的12至17岁青少年进行代表性抽样。根据宏观区域、性别、年龄和学校类型（公立或私立）计算符合条件的受试者的应答率。我们还根据宏观区域内的学校类型，计算了与样本设计中最初选定的学校相比替代学校的百分比。根据性别、年龄和平均体重指数（kg/m2）对受试者和非受试者进行比较。结果 我们在抽取的组中纳入了102327名符合条件的青少年。问卷子集获得的完整信息百分比最高（72.9%）。72.0%的青少年获得了人体测量和问卷的完整信息，70.3%的青少年将这些数据与24小时饮食回忆相结合。52.5%的上午时段青少年（被选进行血液检测）获得了问卷加生化血液评估数据的完整信息。在大多数信息组合中，私立学校的应答百分比高于公立学校。未参与的年龄较大和男性青少年的比例高于参与的青少年。结论 非侵入性程序的应答率较高。血液采集（一种需要12小时禁食期并需法定监护人签署知情同意书的侵入性程序）的应答率较低。公立学校观察到的应答率低于私立学校，这可能反映了注册学生的到校频率较低。
