Incomplete pregnancy and risk of ovarian cancer: results from two Australian case-control studies and systematic review.

Although full-term pregnancies reduce the risk of ovarian cancer, it has not been conclusively established whether incomplete pregnancies also influence risk. We investigated the relationship between a history of incomplete pregnancy and incident epithelial ovarian cancer among over 4,500 women who participated in two large Australian population-based case-control studies in 1990-1993 and 2002-2005. They provided responses to detailed questions about their reproductive histories and other personal factors.

Rear seat safer: seating position, restraint use and injuries in children in traffic crashes in Victoria, Australia.

Car crashes are a major cause of death and serious injury to children but most analyses of risk are based on US data. The Australian context is different in at least three ways: (1) the proportion of passenger-side airbags, a potential risk to children in front seats, is much lower; (2) unlike in the US, Australian airbags are designed to work with restrained passengers; (3) restraint use for children 0-12 years is high (>90%). Official data drawn from Victorian crash records (n=30,631) were used to calculate relative risks of death or serious injury for children (0-3 years, 4-7 years; 8-12 years) traveling in passenger cars during 1993-1998 and 1999-2004.

Self-reported motivations to change and self-efficacy levels for a group of recidivist drink drivers.

The present study reports on a group of 132 recidivist offenders' stages of change and self-efficacy levels for changing and controlling both their drinking and drink driving behaviours. The majority of the sample reported being motivated to change their drink driving, but not their drinking behaviours. The sample also indicated high self-efficacy levels for the two behaviours, although a notable finding was that participants reported higher levels of control over their drinking rather than drink driving behaviours.

Longitudinal study of melanocytic nevi in adolescents.

Background: Although melanocytic nevi are the strongest known risk factors for melanoma, their etiology is not well understood.

Objectives: This study was performed to assess the roles of constitutional pigmentary factors and sun exposure in the development of new nevi in adolescents.

Methods: A cohort of 111 school children, aged 12 and 13 years at baseline, were followed up for 5 years.