Change and stasis in sexual health and relationships: comparisons between the First and Second Australian Studies of Health and Relationships.

School of Psychology, Pevensey 1, University of Sussex, Falmer BN1 9QH, UK. School of Public Health and Community Medicine, University of New South Wales, Sydney, NSW 2052, Australia. Sydney School of Public Health, Charles Perkins Centre (D17), University of Sydney, Sydney, NSW 2006, Australia. Australian Research Centre in Sex, Health and Society, La Trobe University, 215 Franklin Street, Melbourne, Vic. 3000, Australia. Centre for Youth Mental Health, University of Melbourne, Orygen Youth Health Research Centre, 35 Poplar Road, Parkville, Vic. 3052, Australia. Sydney School of Public Health, Edward Ford Building (A27), University of Sydney, Sydney, NSW 2006, Australia. Kirby Institute, Wallace Wurth Building, University of New South Wales, Sydney, NSW 2052, Australia. Deceased. Corresponding author. Email: [email protected]