RESUMEN
This study aimed to evaluate key characteristics of structure in a sample of maternity hospitals in Brazil. Structure was evaluated according to Ministry of Health criteria and included: geographic location, obstetric volume, presence of ICU, teaching activities, staff qualifications, and availability of equipment and medicines. The results showed differences in staff qualifications and availability of equipment in obstetric and neonatal care according to type of financing, region of the country, and degree of complexity. The North/Northeast and Central-West regions presented the most serious problems with structure. The public and mixed hospitals were better structured in the South/Southeast, reaching satisfactory levels on various items, similar or superior to the private hospitals. The current study contributes to the debate on quality of structure in Brazil's hospital services and emphasizes the need to develop analytical studies considering process and results of obstetric and neonatal care.