[The prevalence of exclusive breastfeeding and associated factors: a cross-sectional study of teenage mothers between 14 and 16 years of age in the city of Porto Alegre in the State of Rio Grande do Sul, Brazil].

This is a cross-sectional study to verify the prevalence and associated factors related to exclusive breastfeeding in adolescent mothers between 14 and 16 years of age with 6-month-old or younger babies, born in Porto Alegre in the State of Rio Grande do Sul, Brazil, in 2009. The sample was based on 50% of the newborn babies from the population surveyed. A total of 341 adolescent mothers were interviewed in their homes.

Child sexual abuse in southern Brazil and associated factors: a population-based study.

Background: The prevalence of child sexual abuse (CSA) in the population has been poorly described in developing countries. Population data on child sexual abuse in Brazil is very limited. This paper aims to estimate lifetime prevalence of child sexual abuse and associated factors in a representative sample of the population aged 14 and over in a city of southern Brazil.

[Access by hearing-disabled individuals to health services in a southern Brazilian city].

This cross-sectional study aimed to compare access to health services and preventive measures by persons with hearing disability and those with normal hearing in Canoas, Rio Grande do Sul State, Brazil. The sample included 1,842 individuals 15 years or older (52.9% of whom were females).

[Physical violence and associated factors: a population-based study in Southern Brazil].

Objective: To estimate the prevalence of physical violence and its association with sociodemographic aspects, stressful life events, and the use of health services due to emotional problems.

Methods: A cross-sectional population-based study was conducted with a sample of 1,954 14-year-old or older inhabitants of the city of Canoas (Southern Brazil). They were selected by means of conglomerate sampling according to a pre-established system.

Postnatal depression in Southern Brazil: prevalence and its demographic and socioeconomic determinants.

Background: Studies investigating the prevalence of postnatal depression (PND) show rates ranging from 5% to 36.7%. The investigation of age, race, educational levels, religion and income as risk factors for PND has yielded conflicting results.

Hearing impairment and socioeconomic factors: a population-based survey of an urban locality in southern Brazil.

Objective: To provide the first population-based data on deafness and hearing impairment in Brazil.

Methods: In 2003, a cross-sectional household survey was conducted of 2,427 persons 4 years old and over. The study population was composed of 1,040 systematically chosen households in 40 randomly selected census tracts (dwelling clusters) in the city of Canoas, which is in the state of Rio Grande do Sul, in southern Brazil.

[Anti-HCV seropositivity in dialysis patients].

This cross-sectional study evaluated the prevalence of anti-hepatitis antibodies and associated factors in dialysis patients. Data were collected from records of all patients receiving dialysis treatment [n=1,261] in the city of Porto Alegre, in Southern Brazil, from August to December 2003. The statistical analyses used Chi-squared and the linear tendency test.

[Prevalence and factors associated with hospital admissions in a population-based study in a southern Brazilian city].

This cross-sectional study investigates the use of health services and associated factors in individuals > or = 14 years of age in Canoas, Rio Grande do Sul, Brazil. 1,954 persons were interviewed in 40 census tracts. One-year prevalence of hospital admissions was 9.

Micronuclei in peripheral blood lymphocytes of workers exposed to lead.

Lead plays an important role in many industrial processes. Although highly useful to man, lead has various types of toxic effects. There is constantly growing evidence of a relationship between the induction of chromosome breaks and an increased risk of onset of cancer.