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Is socioeconomic status associated with dietary sodium intake in Australian children? A cross-sectional study

Grimes, Carley A., Campbell, Karen J., Riddell, Lynn J. and Nowson, Caryl A. 2013, Is socioeconomic status associated with dietary sodium intake in Australian children? A cross-sectional study, BMJ Open, vol. 3, no. 2, pp. 1-7.

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Title Is socioeconomic status associated with dietary sodium intake in Australian children? A cross-sectional study
Author(s) Grimes, Carley A.
Campbell, Karen J.
Riddell, Lynn J.
Nowson, Caryl A.
Journal name BMJ Open
Volume number 3
Issue number 2
Start page 1
End page 7
Total pages 7
Publisher BMJ Group
Place of publication London, England
Publication date 2013-02-08
ISSN 2044-6055
Keyword(s) body mass
caloric intake
cardiovascular disease
child health
dietary intake
physical activity
sodium intake
Summary Objective To assess the association between socioeconomic status (SES) and dietary sodium intake, and to identify if the major dietary sources of sodium differ by socioeconomic group in a nationally representative sample of Australian children.

Design Cross-sectional survey.

Setting 2007 Australian National Children's Nutrition and Physical Activity Survey.

Participants A total of 4487 children aged 2–16 years completed all components of the survey.

Primary and secondary outcome measures Sodium intake was determined via one 24 h dietary recall. The population proportion formula was used to identify the major sources of dietary salt. SES was defined by the level of education attained by the primary carer. In addition, parental income was used as a secondary indicator of SES.

Results Dietary sodium intake of children of low SES background was 2576 (SEM 42) mg/day (salt equivalent 6.6 (0.1) g/day), which was greater than that of children of high SES background 2370 (35) mg/day (salt 6.1 (0.1) g/day; p<0.001). After adjustment for age, gender, energy intake and body mass index, low SES children consumed 195 mg/day (salt 0.5 g/day) more sodium than high SES children (p<0.001). Low SES children had a greater intake of sodium from processed meat, gravies/sauces, pastries, breakfast cereals, potatoes and potato snacks (all p<0.05).

Conclusions Australian children from a low SES background have on average a 9% greater intake of sodium from food sources compared with those from a high SES background. Understanding the socioeconomic patterning of salt intake during childhood should be considered in interventions to reduce cardiovascular disease.
Notes This article has been accepted for publication in BMJ Open following peer review and can also be viewed on the journal’s website at www.bmjopen.bmj.com
Language eng
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 920411 Nutrition
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2013, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30052800

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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.