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Changing Population Salt Consumption in Lithgow, Australia

NCT ID: NCT02105727

Last Updated: 2014-11-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

991 participants

Study Classification

INTERVENTIONAL

Study Start Date

2011-03-31

Study Completion Date

2014-04-30

Brief Summary

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The objective of this study is to determine whether a community-based salt reduction program can reduce average salt consumption levels. Baseline levels of salt consumption were measured in 2011, the salt reduction program was then implemented, and now in 2014 investigators are remeasuring salt consumption levels in the community. The hypothesis investigators are testing is that the salt reduction program will have led to a change in salt consumption levels between 2011 and 2014. The study is being done in Lithgow, a regional town in New South Wales , Australia.

Detailed Description

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The primary objective of this project is to determine whether there have been changes in average salt consumption levels in the Lithgow population from 2011 to 2014. The primary null hypothesis to be tested is that there will be no difference between the mean 24-hour urinary sodium excretion levels between 2011 and 2014.

The sample of 419 individuals with 24-hour urine samples in the baseline survey and 600 individuals in the follow-up survey will provide 80% power to detect a difference of 0.7 g/day salt between the mean levels of excretion before and after the intervention. There will be more than 95% power to detect a difference of 1.0 g/day salt or greater.

Conditions

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Blood Pressure Hypertension Cardiovascular Disease

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Salt reduction

Community-based salt reduction

Group Type EXPERIMENTAL

Community-based salt reduction

Intervention Type BEHAVIORAL

Interventions

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Community-based salt reduction

Intervention Type BEHAVIORAL

Other Intervention Names

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Salt-substitute Education Smartphone application - FoodSwitch/Saltswitch

Eligibility Criteria

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Inclusion Criteria

* All adults over the age of 20 years residing in the Lithgow area are eligible
* No exclusion based on inter-current illness, use of medications or any other aspect of demography or personal history.
Minimum Eligible Age

20 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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New South Wales Health

UNKNOWN

Sponsor Role collaborator

New South Wales Food Authority

UNKNOWN

Sponsor Role collaborator

Australian Food and Grocery Council

UNKNOWN

Sponsor Role collaborator

National Health and Medical Research Council, Australia

OTHER

Sponsor Role collaborator

The George Institute

OTHER

Sponsor Role lead

Responsible Party

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Professor Bruce Neal

Professor

Responsibility Role PRINCIPAL_INVESTIGATOR

Locations

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The George Institute for Global Health

Camperdown, New South Wales, Australia

Site Status

Countries

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Australia

References

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Land MA, Webster J, Christoforou A, Johnson C, Trevena H, Hodgins F, Chalmers J, Woodward M, Barzi F, Smith W, Flood V, Jeffery P, Nowson C, Neal B. The association of knowledge, attitudes and behaviours related to salt with 24-hour urinary sodium excretion. Int J Behav Nutr Phys Act. 2014 Apr 4;11(1):47. doi: 10.1186/1479-5868-11-47.

Reference Type BACKGROUND
PMID: 24708561 (View on PubMed)

Land MA, Webster J, Christoforou A, Praveen D, Jeffery P, Chalmers J, Smith W, Woodward M, Barzi F, Nowson C, Flood V, Neal B. Salt intake assessed by 24 h urinary sodium excretion in a random and opportunistic sample in Australia. BMJ Open. 2014 Jan 16;4(1):e003720. doi: 10.1136/bmjopen-2013-003720.

Reference Type RESULT
PMID: 24440795 (View on PubMed)

Land MA, Jeffery P, Webster J, Crino M, Chalmers J, Woodward M, Nowson C, Smith W, Flood V, Neal B. Protocol for the implementation and evaluation of a community-based intervention seeking to reduce dietary salt intake in Lithgow, Australia. BMC Public Health. 2014 Apr 14;14:357. doi: 10.1186/1471-2458-14-357.

Reference Type RESULT
PMID: 24731226 (View on PubMed)

Land MA, Wu JH, Selwyn A, Crino M, Woodward M, Chalmers J, Webster J, Nowson C, Jeffery P, Smith W, Flood V, Neal B. Effects of a community-based salt reduction program in a regional Australian population. BMC Public Health. 2016 May 11;16:388. doi: 10.1186/s12889-016-3064-3.

Reference Type DERIVED
PMID: 27169380 (View on PubMed)

Other Identifiers

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2014079

Identifier Type: -

Identifier Source: org_study_id