BreastScreen Aotearoa (BSA) has offered government funded biennial mammography screening for all NZ women aged 50-64 years since 1999. In July 2004 the target age group was extended to include women aged 45-49 years and 65-69 years. A biennium for these extended age group has now elapsed, and for this and future Internal Monitoring Reports, two age groups will be presented: women aged 45-49 years and women aged-50-69 years. Trend data for key indicators are still presented for women aged 50-64 years, however, a new times-series has also been established for this aggregated target age group of women aged 50-69 years.
An additional development from the previous reporting period, which continues to impact upon data for the current reporting period, was the restructuring of BreastScreen Auckland & North (BSAN) into three Lead Providers BreastScreen Auckland Limited (BSAL), BreastScreen Counties Manukau (BSCM), and BreastScreen Waitemata (BSWN). This occurred during the July to December (2005) reporting period with BSCM beginning screens in September 2005. Data for all indicators are presented for these 3 new Lead Providers, however as the data represent an incomplete biennium, only cumulative data are presented, without point estimates, 95% confidence intervals, or significance testing.