Environments For Healthy Living (EFHL) Griffith birth cohort study: characteristics of sample and profile of antenatal exposures

BMC Public Health

Roderick J McClure⁴  Neil Sipe³  Elizabeth Kendall⁶  Andrew Wilson¹  Gabor Mihala⁵  Anneliese Spinks²  Rani Scott⁵  ShuKay Ng⁷  Rania Shibl⁷  Paul A Scuffham⁷  Cate M Cameron⁷ 

[1] Faculty of Health, Queensland University of Technology, Kelvin Grove, QLD, 4059, Australia;Commonwealth Scientific and Industrial Research Organisation (CSIRO) Ecosystem Sciences, Dutton Park, QLD, 4102, Australia;School of Environment, Griffith University, Nathan, QLD, 4111, Australia;Injury Research Institute, Monash University, Melbourne, Victoria, 3800, Australia;School of Medicine, Griffith University, Nathan, QLD, 4131, Australia;School of Human Services and Social Work, Griffith University, Meadowbrook, Queensland, 4131, Australia;Griffith Health Institute, Griffith University, Nathan, QLD, 4222, Australia

关键词: Descriptive analysis;    Demographics;    Epidemiology;    Longitudinal study;    Birth cohort;   

Others  :  1162728
DOI  :  10.1186/1471-2458-12-1080

 received in 2012-05-23, accepted in 2012-12-13,  发布年份 2012

【 摘 要 】

Background

The Environments for Healthy Living (EFHL) study is a repeated sample, longitudinal birth cohort in South East Queensland, Australia. We describe the sample characteristics and profile of maternal, household, and antenatal exposures. Variation and data stability over recruitment years were examined.

Methods

Four months each year from 2006, pregnant women were recruited to EFHL at routine antenatal visits on or after 24 weeks gestation, from three public maternity hospitals. Participating mothers completed a baseline questionnaire on individual, familial, social and community exposure factors. Perinatal data were extracted from hospital birth records. Descriptive statistics and measures of association were calculated comparing the EFHL birth sample with regional and national reference populations. Data stability of antenatal exposure factors was assessed across five recruitment years (2006–2010 inclusive) using the Gamma statistic for ordinal data and chi-squared for nominal data.

Results

Across five recruitment years 2,879 pregnant women were recruited which resulted in 2904 live births with 29 sets of twins. EFHL has a lower representation of early gestational babies, fewer still births and a lower percentage of low birth weight babies, when compared to regional data. The majority of women (65%) took a multivitamin supplement during pregnancy, 47% consumed alcohol, and 26% reported having smoked cigarettes. There were no differences in rates of a range of antenatal exposures across five years of recruitment, with the exception of increasing maternal pre-pregnancy weight (p=0.0349), decreasing rates of high maternal distress (p=0.0191) and decreasing alcohol consumption (p<0.0001).

Conclusions

The study sample is broadly representative of births in the region and almost all factors showed data stability over time. This study, with repeated sampling of birth cohorts over multiple years, has the potential to make important contributions to population health through evaluating longitudinal follow-up and within cohort temporal effects.

Trial registration

Australian and New Zealand Clinical Trials Registry ACTRN12610000931077

【 授权许可】

   
2012 Cameron et al.; licensee BioMed Central Ltd.

【 图 表 】

Figure 1.

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