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Response rate in the Study of Cardiovascular Risks in Adolescents – ERICA

Overview of attention for article published in Revista de saúde pública, February 2016
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Response rate in the Study of Cardiovascular Risks in Adolescents – ERICA
Published in
Revista de saúde pública, February 2016
DOI 10.1590/s01518-8787.2016050006730
Pubmed ID

Silva, Thiago Luiz Nogueira da, Klein, Carlos Henrique, Souza, Amanda de Moura, Barufaldi, Laura Augusta, Abreu, Gabriela de Azevedo, Kuschnir, Maria Cristina Caetano, Vasconcellos, Mauricio Teixeira Leite de, Bloch, Katia Vergetti


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.

Mendeley readers

The data shown below were compiled from readership statistics for 54 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Unknown 54 100%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 9 17%
Student > Master 9 17%
Student > Ph. D. Student 7 13%
Student > Postgraduate 5 9%
Researcher 5 9%
Other 7 13%
Unknown 12 22%
Readers by discipline Count As %
Nursing and Health Professions 13 24%
Medicine and Dentistry 11 20%
Social Sciences 5 9%
Psychology 2 4%
Immunology and Microbiology 1 2%
Other 4 7%
Unknown 18 33%