[Place of residence and registration: problems and comparability in the classification of births]

In 1973, the classification method for births in Mexico was changed from place of registration to place of mother's residence. "The objective of this work is to analyze how the place of 'customary residence of the mother' has been registered and to determine if the change of classification has some effect [on] the comparability of the information about births in different states. The information analyzed is divided into two periods, according to the way in which it was obtained and processed and the institution responsible for its publication." (SUMMARY IN ENG)