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

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, <8 h; sufficient, > or = 8 h), perceived sleep quality (adequate or poor), sociodemographic characteristics (gender, age, and area), economic factors (work and family income), and school-related variables (grade and shift).

Cellular composition of induced sputum in healthy adults.

Objective: To establish reference values for cellularity in induced sputum samples collected from healthy adults.

Methods: Induced sputum samples were obtained from 88 healthy adult never-smokers (39 males). The mean age was 36 years (range, 18-68 years).

Determination of the inflammatory component of airway diseases by induced sputum cell counts: use in clinical practice.

Objective: To evaluate the usefulness of determining the inflammatory component of airway diseases (inflammometry) by induced sputum cell counts, as well as its influence on treatment decisions in a tertiary facility for the treatment of respiratory diseases.

Methods: We analyzed 151 sputum samples from 132 consecutive patients referred for clinical sputum induction by five pulmonologists between July of 2006 and February of 2007. A structured questionnaire related to the reasons for requesting the test and to the therapeutic decision making based on test results was completed by each attending physician upon receiving the test results.