RESUMO
Pregnant women have a major role to play in assessing and improving their own quality of care. This study in Tabriz, Islamic Republic of Iran, aimed to assess the effectiveness of an intervention for pregnant women-based on education and support groups and involvement in quality assessment activities-in order to improve the technical quality of public maternity care at public health centres. The intervention phase took place between September 2012 and may 2013. The outcome measure was health-care providers' degree of adherence to the Iranian maternity care standards. An intervention group of 92 pregnant women from 10 health centres was compared with a control group of 93 pregnant women from 11 centres. Logistic regression analysis showed that the self-assessed technical quality of maternity care received by the women was significantly better in the intervention that the control group for several of the standards concerning clinical examinations, maternal education and vitamin and mineral supplements