[Estimate of coverage of birth statistics (author's transl)]. / Estimacion de la cobertura de la estadisticas de natalidad.

PIP: It has been empirically verified that the reduction of growth rates in the countries has been prevailingly due to the decline in the gross birth rate. This remarkable birth decrease can be explained by the parallel reduction in the age-specific fertility rate. The most frequently used source in the analysis of chronological variation of age-specific fertility rates is vital statistics, which currently suffer from birth underregistration, a fact that will make it impossible to adequately detect level changes through time. Thus there is the necessity of depending upon indirect methods to determine the coverage of these registers in order to obtain sufficiently reliable age-specific fertility estimates which will permit the detection of these level changes. The present work indicates a procedure for evaluating and adjusting birth statistics using fertility data from Demographic Surveys and Population Censuses, in order to make trends analysis possible. (Author's modified)^ieng