[Sleep quality in an adult population exposed to the noise of El Dorado Airport, Bogotá, 2012].

Introduction: The airport of Bogotá lies within the city and its expansion could produce an increase in adverse effects on the health of the inhabitants of Fontibón and Engativá districts due to the noise it generates.

Objective: To determine the prevalence of sleep disturbances and associated factors among residents of Fontibón exposed to this noise.

Materials And Methods: A cross-sectional study design was used, involving a sample of 205 people aged 18 to 65, selected by means of stratified random sampling.

[Air pollution and respiratory illness in children aged less than 5 years-old in Bogotá, 2007].

Objectives: Determining the relationship between indoor and outdoor air pollution caused by particulate matter PM10 and respiratory symptoms in children aged younger than 5 years-old in three locations in Bogota.

Methods: This was a cohort study, involving 315 children in kindergartens located in the area of greatest exposure to PM10, and 304 in kindergartens located in an area of less exposure. The cohort was followed-up for 19 weeks considering respiratory symptoms.

[PM10 exposure-related respiratory symptoms and disease in children living in and near five coal-mining areas in the Cesar department of Colombia].

Objectives: Establishing the prevalence of respiratory symptoms and disease in children aged less than 12 years-old living within the Cesar department's coal-mining area and possible associated factors.

Methods: This was a cross-sectional study of 1,627 children aged less than 10 years-old living in and near coal-mining areas in the Cesar department who were exposed to different levels of PM10 from 2008-2010; their PM10 exposure-related symptoms and respiratory diseases were measured, seeking an association with living in areas exposed to particulate material.

Results: Children living in areas close to coal-mining activity which also had high traffic volume had a higher rate of probable cases of asthma; those living in areas with traffic (not no coal-mining) were absent from school for more days due to acute respiratory disease.