Food Selection Clinical Trial
Official title:
Impact of front-of Pack Nutrition Labels on Purchase Intentions in an Online Supermarket-A Series of Randomized Trials
Front-Of-Pack (FOP) nutrition labelling, providing simplified information on nutritional
content at a glance, in order to help consumer make informed choices, has been identified as
of major interest by public health specialists of many countries. French health authorities
are currently considering the endorsement of a FOP nutrition label, but no specific format
has yet been determined. A more simplified FOP nutrition label has been put forward in
France, the 5-Colour Nutrition Label (5-CNL). Recent data suggests that the 5-CNL FOP label
is well perceived and understood by consumers. The introduction of a FOP nutrition labelling
system has been identified as challenging in certain population groups, due to their lower
level of nutrition knowledge and unhealthier diets.
The aim of the investigators is to evaluate the impact of FOP nutrition labels on the
nutritional quality of the shopping cart in an online experimental supermarket in various
nutritionally at-risk populations. Two FOP systems will be tested to a control situation
without FOP labelling: the Reference Intakes (RI), currently in use by some manufacturers and
present in a portion of food products sold in France, and the 5-Colour Nutrition Label
(5-CNL).
Three 3 arm parallel arm randomized trials are designed, each targeting a specific
population. The methodology and interventions are identical across trials. Trials will be
conducted in: 1) Working adults between 30-50 years old with low income, 2) Students and 3)
Older subjects with identified chronic diseases. The intervention consists in the application
of FOP nutrition labels on all food products, either the RI label, currently in use in some
products in France, and the 5-CNL label. A control situation with no FOP will also be used.
Participants will be asked to perform a shopping session in an experimental online
supermarket, in one of the three experimental conditions described. The main outcome will be
the overall nutritional quality of the shopping cart, assessed using the mean Food Standards
Agency Nutrient profiling system score of the items in the shopping cart.
Front-Of-Pack (FOP) nutrition labelling, providing simplified information on nutritional
content at a glance, in order to help consumer make informed choices, has been identified as
of major interest by public health specialists of many countries. Modelling studies suggested
that adoption of effective nutrition labelling would be cost-effective and provide health
benefits. French health authorities are currently considering the endorsement of a FOP
nutrition label, but no specific format has yet been determined. A more simplified FOP
nutrition label has been put forward in France, the 5-Colour Nutrition Label (5-CNL). Recent
data suggests that the 5-CNL FOP label is well perceived and understood by consumers.
Moreover, a recent randomized trial, based on an online experimental supermarket, showed that
the 5-CNL displayed the highest difference in nutritional quality compared to the control
situation. The introduction of a FOP nutrition labelling system has been identified as
challenging in certain population groups, due to their lower level of nutrition knowledge and
unhealthier diets. Subjects with lower levels of income, or the young appear as a key target
in which the impact of FOP nutrition labels has been poorly explored. Moreover, the impact of
such a label on subjects suffering from a chronic condition for which dietary modifications
are part of the treatment should be carefully considered, in order to avoid potential
undesirable effects of the label in these populations.
The aim of the investigators is to evaluate the impact of FOP nutrition labels on the
nutritional quality of the shopping cart in an online experimental supermarket in various
nutritionally at-risk populations. Two FOP systems will be tested to a control situation
without FOP labelling: the Reference Intakes (RI), currently in use by some manufacturers and
present in a portion of food products sold in France, and the 5-Colour Nutrition Label
(5-CNL).
Three 3 arm parallel arm randomized trials are designed, each targeting a specific
population. The methodology and interventions are identical across trials. Trials will be
conducted in: 1) Working adults between 30-50 years old with low income, 2) Students and 3)
Older subjects with identified chronic diseases. The intervention consists in the application
of FOP nutrition labels on all food products, either the RI label, currently in use in some
products in France, and the 5-CNL label. A control situation with no FOP will also be used.
Participants will be asked to perform a shopping session in an experimental online
supermarket, in one of the three experimental conditions described. The main outcome will be
the overall nutritional quality of the shopping cart, assessed using the mean Food Standards
Agency Nutrient profiling system score of the items in the shopping cart.
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