Prevalence of voluntary dehydration according to urine osmolarity in elementary school students in the metropolitan region of São Paulo, Brazil.

Autor:	Dias FC; Divisao de Gastroenterologia Pediatrica, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo, SP, BR., Boilesen SN; Divisao de Gastroenterologia Pediatrica, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo, SP, BR., Tahan S; Divisao de Gastroenterologia Pediatrica, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo, SP, BR., Melli LC; Divisao de Gastroenterologia Pediatrica, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo, SP, BR., Morais MB; Divisao de Gastroenterologia Pediatrica, Escola Paulista de Medicina, Universidade Federal de Sao Paulo, Sao Paulo, SP, BR.
Jazyk:	angličtina
Zdroj:	Clinics (Sao Paulo, Brazil) [Clinics (Sao Paulo)] 2019 Sep 26; Vol. 74, pp. e903. Date of Electronic Publication: 2019 Sep 26 (Print Publication: 2019).
DOI:	10.6061/clinics/2019/e903
Abstrakt:	Objectives: To evaluate the prevalence of voluntary dehydration based on urine osmolarity in elementary school students from two public educational institutions in the metropolitan region of São Paulo and evaluate whether there is a relationship between voluntary dehydration and nutritional status or socioeconomic status. Methods: Analytical cross-sectional study with students from two public schools in the city of Osasco. The determination of urine osmolarity was performed using the freezing method of the Advanced® Osmometer Model 3W2. Urine osmolarity greater than 800 mOsm/kg H2O was considered voluntary dehydration. During data collection, the weights and heights of the students, environmental temperatures and air humidity levels were obtained. Results: A total of 475 students aged six to 12 years were evaluated, of whom 188 were male. Voluntary dehydration occurred in 63.2% of the students and was more frequent in males than in females. The prevalence of voluntary dehydration was more frequent in males aged six to nine years than in females. However, no statistically significant difference was observed between males and females aged 10 to 12 years. No association was found between voluntary dehydration and nutritional status or socioeconomic status. Conclusion: The prevalence of voluntary dehydration was high in elementary school students and was more frequent in males. No association was found between voluntary dehydration and nutritional or socioeconomic status.
Databáze:	MEDLINE
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