The impact of the introduction in 2003 and 2004 of free general practice (GP) sexual health visits for registered adolescents (<25-year-olds) living in rural and lower socioeconomic areas in New Zealand was analysed in this report, using data from 20 Waikato-based practices enrolled in the scheme. The data were linked to laboratory testing for Chlamydia trachomatis from January 2003 to December 2005. Registered population data Twenty-nine practices without additional funding served as controls. Chlamydia testing among <25 year olds at the intervention practices increased over time, in contrast to non-intervention practices, with coverage of females aged 18–24 years within the intervention increasing from 13.9% in 2003 to 16.8% in 2005. Intervention practices had significantly higher test positivity rates than non-intervention practices (8.7% vs 5.9) with increases in test positivity, from 7.7% in 2003 to 10% in 2005, relating mainly to increases in positive tests among females aged <25 years.
