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Principles

The 3centres Collaboration steering group has developed six principles to provide a framework for developing guidelines, particularly for situations where there were ambiguities in the research evidence and difficulties reaching consensus. The principles state that to the greatest extent possible maternity care should be:

The implications of these principles for guidelines can be seen in the recommendation that screening tests are "offered" rather than "performed".

All guidelines contain recommendations that women receive written information in an appropriate language and format and are given an opportunity to discuss procedures and the implications of a positive result prior to those tests. This corresponds to principles of woman-centred and collaborative pregnancy care.