The aim of this study was to investigate the notification of the statement of live birth to Jaboatão dos Guararapes, Pernambuco State, residents, which died with less than a year of life, through the linkage between the System of Information on Mortality (SIM) and the System of Information on Live Birth (SINASC) in the year of 2004, in order to assess the quality of information. The population of the study was composed by 184 death certificates registered on SIM. Then these death certificates were paired with the respective DNV. Hence, it could be verified that 49 DNs had not been registered on the SINASC, which lead to an active search of these in the various localities where the death occurred. After this procedure, 33 (67.35%) medical records were located. From these, 7 (14.29%) were rescued to the statement of live birth and 5 (10.20%) presented divergences of the information. These results call the attention to the need of enabling the professionals that fulfill the base tools of the information systems, thus, improving their quality.