Document Detail

Time-trends and causes of infant, neonatal and postneonatal mortality in Mexico, 1980-1990.
MedLine Citation:
PMID:  9060225     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: This article analyzes the time-trends and causes of infant, neonatal, and postneonatal mortality in Mexico during the 1980's. MATERIAL AND METHODS: Data on infant deaths came from yearly tabulations (1980 to 1990) published by the Mexican government. Time-trends of mortality rates were determined by simple linear regression models. The parallelism test was performed for evaluating similarities in trends in neonatal and postneonatal mortality rates by causes. RESULTS: During the 1980's, infant mortality rates in Mexico declined from 40.4 to 31.1/1000 (beta = -0.791). Postneonatal mortality rates showed a strong decrease (beta = -0.892), while neonatal mortality rates were almost stationary (beta = 0.089). Significant rate decreases were observed for intestinal infections, Pneumonia and influenza and All other causes while Certain perinatal problems, Congenital defects and Nutritional deficiencies increased. No changes were observed in Acute respiratory infections. The neonatal proportional mortality showed an incremental trend accounting for 37.6% in 1980 and ascending to 48.8% in 1990 of the mortality in the first year of life. CONCLUSIONS: This analysis indicates that the reduction in infant mortality in Mexico during the 1980's was due to declining postneonatal mortality while neonatal mortality rates remain almost unchanged.
This report describes the time-trends and causes of infant, neonatal, and postneonatal mortality in Mexico during 1980-90. Data were obtained from annual data collected by the General Direction of Statistics and Information of the Secretary of Health. The infant mortality rate (IMR) declined during the 1980s due to declines in the postneonatal mortality rate (PMR). The neonatal mortality rate (NMR) remained stable at around 15.2/1000. IMR declined from 40.4/1000 to 31.1/1000. PMR declined from 25.6/1000 to 16.2/1000. Both changes in PMR and IMR were statistically significant. Rates of mortality due to intestinal infections, pneumonia, and influenza declined. Perinatal problems and congenital defects increased. Significant increases occurred for nutritional deficiencies in IMR and PMR. Acute respiratory infections remained about the same. State variation in infant mortality shows that some states have double the IMR. Further analysis is needed to determine the trends in state-specific IMR and PMR. Decreases in pneumonia and influenza are accounted for by increased levels of sanitation, improved literacy of women, promotion of oral rehydration therapy, massive immunization campaigns against measles, and greater access to health care services. The trends are considered reliable based on the assumption that births are underregistered.
S Vandale; R A Rascón-Pacheco; M L Kageyama
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Salud pública de México     Volume:  39     ISSN:  0036-3634     ISO Abbreviation:  Salud Publica Mex     Publication Date:    1997 Jan-Feb
Date Detail:
Created Date:  1997-04-08     Completed Date:  1997-04-08     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0404371     Medline TA:  Salud Publica Mex     Country:  MEXICO    
Other Details:
Languages:  eng     Pagination:  48-52     Citation Subset:  IM; J    
Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública (INSP), México.
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MeSH Terms
Age Factors
Infant Mortality / trends*
Infant, Newborn
Linear Models

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