Desafios na definição da idade gestacional em estudos populacionais sobre parto pré-termo: o caso de um estudo em Campina Grande (PB), Brasil

Revista Brasileira de Epidemiologia

Melo, Adriana Suely de Oliveira¹  Novaes, Hillegonda Maria Dutilh²  Alencar, Gizelton Pereira²  Assunção, Paula Lisiane de²  Almeida, Marcia Furquim de² 

[1] Instituto de Medicina Integral Prof. Fernando Figueira, Recife, Brasil;Universidade de São Paulo, São Paulo, Brasil

关键词: gestational age;    pregnancy;    pretermature birth;    data sources;    data collection;    case-control studies.;   

DOI  :  10.1590/S1415-790X2011000300010

学科分类：过敏症与临床免疫学

来源: SciELO

【 摘 要 】

INTRODUCTION:The prevalence of preterm birth has increased in recent years and it is currentlya worldwide public health problem. In any epidemiological study, the greatestchallenge facing the study of preterm delivery is to standardize the measurementof gestational age births.
OBJECTIVE: To describe the methods used to define the sample under studyand selection of events in case-control studies of risk factors for pretermbirth in hospital births by mothers living in the city of Campina Grande (PB),Brazil.
METHODS: The design was a case-control population-based, which was conductedfrom June 2008 to May 2009. The cases were born at less than 37 weeks of gestationand controls at 37 weeks or more. Gestational age in weeks was defined usingselection criteria based on the accuracy of the estimate. Interviews were conductedwith mothers and collection of hospital records.
RESULTS: It was selected 341 cases and 424 controls, 13.19% were classifiedas extremely preterm (<28 weeks), 34.87% as very preterm (<33 weeks)and 65.10% as moderate preterm (33 to 36 weeks of gestation). Among controls,the percent of children born 37-39 weeks was 58.02 to 5.90% was born post term(>42 weeks).
CONCLUSION: The strategies shown to be viable, even in a context withmajor limitations in obtaining the necessary information, given that the profileof preterm infants, the distribution of gestational age were comparable to studieswith more accurate methods.

【 授权许可】

CC BY