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Attitudes and Understanding of Sodium Claims on Food Labels

This study has been completed.
Advance Foods and Materials Network
Canadian Institutes of Health Research (CIHR)
Canadian Stroke Network
Information provided by (Responsible Party):
Mary R. L'Abbé, University of Toronto Identifier:
First received: January 3, 2013
Last updated: January 9, 2013
Last verified: January 2013

Sodium-related claims on food labels should help people find lower sodium food choices; however consumer attitudes and understanding of such claims are unknown.

The objective of this study was to evaluate: 1) the attitudes and understanding to different types of permitted sodium claims and 2) the effect of hypertension on responses to such claims.

Condition Intervention
Behavioral: Mock package questionnaire

Study Type: Observational
Study Design: Observational Model: Ecologic or Community
Time Perspective: Cross-Sectional
Official Title: Consumer Attitudes and Understanding of Low Sodium Claims on Food: An Analysis of Healthy and Hypertensive Individuals

Further study details as provided by Mary R. L'Abbé, University of Toronto:

Primary Outcome Measures:
  • Response to survey questions measuring attitudes towards sodium claims using 5 point likert rating scales [ Time Frame: On average the survey took 25 minutes to complete ]
    Within an online survey, participants were exposed to 4 mock soup packages that differed only by the claim it carried. After being exposed to each mock package, participants were asked to rate their perceived attractiveness, healthiness, credibility, usefulness of the tested sodium claims using 5 point likert scales. Participants were also asked to rate their purchasing intentions of the mock soup product with the different sodium claims.

  • Response to survey questions evaluating participants understanding of sodium claims [ Time Frame: On average the survey took 25 minutes to complete ]
    After each mock package, understanding of sodium claims was evaluated using various survey methods. First, participants were asked to rate their perceived clarity of the wording of the claim using a 5 point likert scale (a subjective measure of understanding). Second, participants were ask to rate, on 5 point likert scales, the perceived benefit of consuming the mock package for subgroups with different health conditions (an indirect measure of understanding). Finally we asked participants, in an open ended question, to explain what a claim means to a friend (an objective measure of understanding).

Enrollment: 987
Study Start Date: September 2011
Study Completion Date: October 2011
Primary Completion Date: October 2011 (Final data collection date for primary outcome measure)
Groups/Cohorts Assigned Interventions
Canadian Consumer Monitor Panel
Canadian Consumer Monitor Panel is a online consumer monitor panel which answers surveys every 8-10 weeks about diet and health.
Behavioral: Mock package questionnaire
Within a online questionnaire we exposed participants randomly to 4 mock packages differing only by the nutrition claim it carried and asked participants to answer several questions on attitudes and understanding after each mock package.


Ages Eligible for Study:   20 Years to 69 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
A subsection of the Canadian Consumer Monitor Panel - a national representative online consumer panel comprised of 30,000 Canadians

Inclusion Criteria:

  • Primary grocery shoppers
  • Canadian adults between the ages 20 to 69 years

Exclusion Criteria:

  • Did not have an email address or have access to internet
  Contacts and Locations
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Please refer to this study by its identifier: NCT01764724

Canada, Ontario
University of Guelph
Guelph, Ontario, Canada
Sponsors and Collaborators
University of Toronto
Advance Foods and Materials Network
Canadian Institutes of Health Research (CIHR)
Canadian Stroke Network
Principal Investigator: Mary R L'Abbé, PhD University of Toronto
  More Information

Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Mary R. L'Abbé, Earle W. McHenry Professor, and Chair, Department of Nutritional Sciences, University of Toronto Identifier: NCT01764724     History of Changes
Other Study ID Numbers: 201103SOK-01
Study First Received: January 3, 2013
Last Updated: January 9, 2013

Keywords provided by Mary R. L'Abbé, University of Toronto:
Attitudes and understanding of sodium claims
General canadian population processed this record on May 25, 2017