Primary, nationwide abortion statistics for the United States are available from two sources—privately from the Guttmacher Institute (AGI) and publicly from the Centers for Disease Control (CDC) . In recent years, California, Maryland, and New Hampshire have not publicly released their abortion totals—rendering the CDC numbers incomplete. The following information has been gleaned from both sources to provide an overview of the frequency and demography of abortion. Additional, secondary statistics have been taken from the National Abortion Federation's (NAF) 2009 teaching text on abortion, Management of Unintended and Abnormal Pregnancy: Comprehensive Abortion Care .
UNCTAD assists national statistical agencies in developing and transition countries in their data collection and dissemination efforts. In cooperation with UN agencies, development banks and other international organisations, such as Eurostat. UNCTAD coordinates technical cooperation activities with donors and other organisations to avoid duplication of work and to encourage complementarity and synergy. For this purpose UNCTAD contributes to the Partner Report on Support to Statistics (PRESS) maintained by Paris21, which provides a snapshot of support to statistical capacity development worldwide and, thus, is a valuable tool for collaboration building among statistical international organisations.