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Cadernos Saúde Coletiva

Print version ISSN 1414-462XOn-line version ISSN 2358-291X


ARAUJO, Márcio Flávio Moura de et al. Plasma cortisol levels in Brazilians college students with poor sleep quality. Cad. saúde colet. [online]. 2016, vol.24, n.1, pp.105-110. ISSN 1414-462X.


To investigate the association between sleep quality in Brazilian university students and plasma cortisol levels.


A cross-sectional study conducted with 688 university students assessing sociodemographic indicators, quality of sleep and cortisol levels. We used Poisson robust regression to assess the association.


Approximately 95% and 7% of the sample showed poor sleep quality and high levels of cortisol, respectively. These lingered 16-30 minutes to fall asleeep (p = 0.030), with 65-74% efficiency (p = 0.021) and greater workload those with normal levels of cortisol (p = 0.021). The chances of a college student, with high plasma cortisol levels, to present poor sleep quality were similar to good sleepers and with no significant statistical significance (p = 0.124).


There was no statistically significant association between plasma cortisol levels of and quality of sleep in college students.

Keywords : sleep disorders; students; young adult; hydrocortisone.

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