In continuation to the research project on the accuracy of the certification of the underlying causes of death in women of child-bearing age (10-49), resident in the Municipality of S. Paulo, Brazil, in 1986, "original" death certificates were compared with "revised" death certificates (including additional information). The maternal mortality rate rose from 44.5 per 100,000 live births (l.b.) to 99.6 per 100,000 l.b., a high rate when compared with that of other places. When these data were compared with those of previous, similar investigations in the same city, the maternal mortality rate rose in the period 1962/4 through 1972/4 and fell in 1986. The main causes of death were: hypertension complicating pregnancy, other conditions of the mother which complicated pregnancy and puerperal complications. The need to extend the 42-day period related to the concept of maternal death, as well as the relationship between the non-maternal conditions (cancer, violence) and the gravidic-puerperal cycle are discussed.
Maternal mortality; Cause of death; Death certificates