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[Longitudinal study of the mother and child population in an urban region of southern Brazil, 1993: methodological aspects and preliminary results].

Abstract：

:All babies born in the hospitals of the city of Pelotas, Brazil, in 1982 were studied soon after delivery and followed up prospectively during the first years of their lives. In 1993, this study was repeated with a similar methodology, with the aim of assessing eventual changes in the level of maternal and child health. All five maternity hospitals in the city were visited daily and the 5,304 babies born included in the study. They were weighed and measured, and their gestational age was assessed using the Dubowitz method. Their mothers were examined and interviewed regarding a large number of risk factors. The mortality of these children was studied through the surveillance of all hospitals, cemeteries and death registries, and all hospital admissions were also recorded. Two nested case-control studies were carried out to assess risk factors for mortality and hospital morbidity. A systematic sample of 655 children were examined at home at one and three months of age, and these infants, as well as another sample of 805 children including all low-birthweight babies were also examined at the ages of six and twelve months. Their psychomotor development was also assessed. Losses to follow-up were only 6.6% at twelve months. Relative to the 1982 indicators, perinatal mortality fell by about 30% and infant mortality by almost 50%. The median duration of breastfeeding increased from 3.1 to 4.0 months. On the other hand, there was little change in the prevalences of low birthweight or of length for age at twelve months. The article that refers this abstract describes the methodology of the study and forthcoming publications will present detailed results. :All babies born in the hospitals of the city of Pelotas, Brazil, in 1982 were studied soon after delivery and followed up prospectively during the first years of their lives. In 1993 this study was repeated with a similar methodology, with the aim of assessing eventual changes in the level of maternal and child health. All five maternity hospitals in the city were visited daily and the 5304 babies born included in the study. They were weighed and measured, and their gestational age was assessed using the Dubowitz method. Their mothers were examined and interviewed regarding a large number of risk factors. The mortality of these children was studied through the surveillance of all hospitals, cemeteries, and death registries, and all hospital admissions were also recorded. Two nested case-control studies were carried out to assess risk factors for mortality and hospital morbidity. A systematic sample of 655 children was examined at home at 1 and 3 months of age, and these infants, as well as another sample of 805 children including all low-birth-weight babies, were also examined at the ages of 6 and 12 months. Their psychomotor development was also assessed. Losses to follow-up were only 6.6% at 12 months. Relative to the 1982 indicators, perinatal mortality fell by about 30% and infant mortality by almost 50%. The median duration of breast feeding increased from 3.1 to 4.0 months. On the other hand, there was little change in the prevalences of low birth weight or of length for age at 12 months. The methodology of the study is described, and forthcoming publications will present detailed results. (author's modified)

journal_name

Rev Saude Publica

journal_title

Revista de saude publica

authors

Victora CG,Barros FC,Halpern R,Menezes AM,Horta BL,Tomasi E,Weiderpass E,Cesar JA,Olinto MT,Guimarães PR,Garcia MM,Vaughan JP

doi

10.1590/s0034-89101996000100005

subject

Has Abstract

pub_date

1996-02-01 00:00:00

pages

34-45

issue

eissn

0034-8910

issn

1518-8787

journal_volume

pub_type

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[Longitudinal study of the mother and child population in an urban region of southern Brazil, 1993: methodological aspects and preliminary results].