Sexual behaviour, sexually transmitted infections and attitudes to chlamydia testing among a unique national sample of young Australians: baseline data from a randomised controlled trial.

Background: Chlamydia infection is the most common notifiable sexually transmitted infection (STI) in Australia and mostly affects young people (15 - 25 years). This paper presents baseline data from a randomised controlled trial that aimed to increase chlamydia testing among sexually active young people. The objectives were to identify associations between sexual behaviour, substance use and STI history and explore attitudes to chlamydia testing.

Facilitating chlamydia testing among young people: a randomised controlled trial in cyberspace.

Objectives: Chlamydia notifications have been rising in Australia for over a decade and are highest in young people. This study aimed to evaluate the impact of an internet-based intervention on chlamydia testing among young people 16-25 years.

Methods: In this randomised controlled trial, recruitment, data collection, study interventions and follow-up occurred entirely in cyberspace, facilitated by a website.

Early cystic fibrosis lung disease detected by bronchoalveolar lavage and lung clearance index.

Rationale: Unrecognized airway infection and inflammation in young children with cystic fibrosis (CF) may lead to irreversible lung disease; therefore early detection and treatment is highly desirable.

Objectives: To determine whether the lung clearance index (LCI) is a sensitive and repeatable noninvasive measure of airway infection and inflammation in newborn-screened children with CF.

Methods: Forty-seven well children with CF (mean age, 1.

Longitudinal analysis of resting energy expenditure in patients with cystic fibrosis.

Objective: To assess whether elevated resting energy expenditure (REE) in female patients with cystic fibrosis (CF) persists longitudinally during late childhood and puberty.

Study Design: REE and body composition were measured 3 times in 2 years in 86 children with CF. Pubertal status, bacterial colonization, liver disease, pancreatic and pulmonary function, and genotype were determined, and linear mixed model analyses were used to determine predictors and changes in REE longitudinally.

Relation between hormones and body composition, including bone, in prepubertal children.

Background: Sex differences in body composition exist before puberty, but the reason for this phenomenon is unknown. The physical changes that occur during puberty are mediated, in part, through sex steroids, insulin-like growth factor I (IGF-I), and leptin. However, data are lacking that address the extent to which concentrations of these hormones influence body composition, bone mass, and density in prepubertal children.