Population status of selenium in Colombia and associated factors: a cross-sectional study.

Objectives: This study aims to investigate the population status of selenium in Colombia and other associated factors.

Methods: Cross-sectional study, in population of urban or rural origin (n=412). Main outcome measures were: median serum selenium, thyrotropin, the prevalence of and positivity of anti-thyroid peroxidase, anti-thyroglobulin, and anti-TSH receptor.

HIV and risk behaviors of persons of low socio-economic status, Popayan-Colombia (2008-2009).

Objective: To determine HIV presence and risk behaviors of persons of low socio-economic status in the city of Popayan-Colombia.

Methods: Cross-sectional study; between 2008 and 2009, 363 participants of Popayan signed informed consent and received pre and post HIV test counseling. Socio-demographic characteristics and history of STDs, risk behaviors and previous HIV testing were assessed.

[Healthcare patterns and life styles in adolescents from three schools in Popayán, Colombia].

Objective: Identifying healthy practice and risky behavior in students from Popayan in June and December 2009.

Method: This was across-sectional study in 3 schools in Popayan. The information was collected using the Global School Health Survey (GSHS), validated by the WHO.