Risky sexual behaviors and their association with overweight and obesity among adolescent students: a cross-sectional study.

Objective: To determine the prevalence of risky sexual behavior and its association with overweight and obesity among adolescent students.

Methods: This is a cross-sectional study, conducted in public schools with adolescents aged 12 to 17 years. We used the questionnaire Youth Risk Behavior Survey.

Prevalence of headache and its interference in the activities of daily living in female adolescent students.

Objective: To describe the prevalence of headache and its interference in the activities of daily living (ADL) in female adolescent students.

Methods: This descriptive cross-sectional study enrolled 228 female adolescents from a public school in the city of Petrolina, Pernambuco, Northeast Brazil, aged ten to 19 years. A self-administered structured questionnaire about socio-demographic characteristics, occurrence of headache and its characteristics was employed.

Menstruation disturbances: prevalence, characteristics, and effects on the activities of daily living among adolescent girls from Brazil.

Study Objective: To determine the prevalence, characteristics and effects on the activities of daily living of menstruation disturbances among adolescent girls.

Design: Descriptive, cross-sectional study.

Setting: A public school in the city of Petrolina, Brazil.