Sociodemographic factors associated with sleep quality and sleep duration in adolescents from Santa Catarina, Brazil: what changed between 2001 and 2011?

Abstract Objective We aimed to identify and compare the sociodemographic and economic factors associated with perceived sleep quality and sleep duration in high school students from Santa Catarina, Brazil (2001 and 2011). Methods Our study used a school-based, cross-sectional survey administered in 2001 and 2011 to high school students aged 15–19 years ( n = 5028 in 2001; n = 6529 in 2011) enrolled in public schools in Santa Catarina, Brazil. Results The students responded to a questionnaire that asked about the number of hours slept on school days (insufficient,