Area-level socioeconomic characteristics and incidence of metabolic syndrome: a prospective cohort study

BMC Public Health

Mark Daniel¹  Anne Taylor³  Robert Adams²  Neil T Coffee⁴  Natasha J Howard⁴  Catherine Paquet⁵  Anh D Ngo⁶ 

[1] Department of Medicine, The University of Melbourne, St Vincent’s Hospital, Melbourne, Victoria 3065, Australia;Population Research and Outcome Studies, Discipline of Medicine, The University of Adelaide, Adelaide, South Australia 5005, Australia;The Health Observatory, Discipline of Medicine, The University of Adelaide, Adelaide, South Australia 5005, Australia;Social Epidemiology and Evaluation Research Group, Sansom Institute for Health Research, and School of Population Health, University of South Australia, Adelaide 5001, Australia;Research Centre of the Douglas Mental Health University Institute, Verdun, Québec H4H 1R2, Canada;Social Epidemiology and Evaluation Research Group, Sansom Institute for Health Research, and School of Population Health, University of South Australia, P4-18F, Playford Building, City East Campus, Adelaide 5000, Australia

关键词: Residence characteristics;    Cohort study;    Education;    Income;    Socioeconomic status;    Incidence;    Metabolic syndrome;   

Others  :  1162001
DOI  :  10.1186/1471-2458-13-681

 received in 2013-01-18, accepted in 2013-07-19,  发布年份 2013

【 摘 要 】

Background

The evidence linking socioeconomic environments and metabolic syndrome (MetS) has primarily been based on cross-sectional studies. This study prospectively examined the relationships between area-level socioeconomic position (SEP) and the incidence of MetS.

Methods

A prospective cohort study design was employed involving 1,877 men and women aged 18+ living in metropolitan Adelaide, Australia, all free of MetS at baseline. Area-level SEP measures, derived from Census data, included proportion of residents completing a university education, and median household weekly income. MetS, defined according to International Diabetes Federation, was ascertained after an average of 3.6 years follow up. Associations between each area-level SEP measure and incident MetS were examined by Poisson regression Generalised Estimating Equations models. Interaction between area- and individual-level SEP variables was also tested.

Results

A total of 156 men (18.7%) and 153 women (13.1%) developed MetS. Each percentage increase in the proportion of residents with a university education corresponded to a 2% lower risk of developing MetS (age and sex-adjusted incidence risk ratio (RR) = 0.98; 95% confidence interval (CI) =0.97-0.99). This association persisted after adjustment for individual-level income, education, and health behaviours. There was no significant association between area-level income and incident MetS overall. For the high income participants, however, a one standard deviation increase in median household weekly income was associated with a 29% higher risk of developing MetS (Adjusted RR = 1.29; 95%CI = 1.04-1.60).

Conclusions

While area-level education was independently and inversely associated with the risk of developing MetS, the association between area-level income and the MetS incidence was modified by individual-level income.

【 授权许可】

   
2013 Ngo et al.; licensee BioMed Central Ltd.

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