U. S. Food and Drug Administration
Center for Food Safety and Applied Nutrition
Consumer Impacts of Health Claims
January 1997


Experimental Design for the Health Claims Quantitative Study

Bag #               Product 1 Product 2 Product 3
 
 1                  Cereal    Yogurt    Lasagna
                    Control1  Long      NIH1
 
 2                  Yogurt    Lasagna   Cereal
                    NIH1      Control1  Long
 
 3                  Lasagna   Cereal    Yogurt
                    Long      NIH1      Control1
 
 4                  Lasagna   Yogurt    Cereal
                    Control2  SBP2      FDA1
 
 5                  Yogurt    Cereal    Lasagna
                    FDA1      Control2  SBP2
 
 6                  Cereal    Lasagna   Yogurt
                    SBP2      FDA1      Control2
 
 7                  Cereal    Yogurt    Lasagna
                    Control2  Short     FDA2
 
 8                  Yogurt    Lasagna   Cereal
                    FDA2      Control2  Short
 
 9                  Lasagna   Cereal    Yogurt
                    Short     FDA2      Control2
 
 10                 Lasagna   Yogurt    Cereal
                    Control1  SBP1      NIH2
 
 11                 Yogurt    Cereal    Lasagna
                    NIH2      Control1  SBP1
 
 12                 Cereal    Lasagna   Yogurt
                    SBP1      NIH2      Control1

Health Claims Quantitative Study Experimental Conditions 

Control1:      No health claim, no nutrient content claims  (CONTROL)
 
Control2:      No health claim, one or more nutrient content claims
               (CONTENT)
 
Short:         Generic claim (short text)
 
Long:          Generic claim (long text)
 
NIH1:          Public health authority with short health claim
               (National Institutes of Health/American Heart
               Association)
 
NIH2:          Public health authority with long health claim
               (National Institutes of Health/American Heart
               Association)
 
FDA1:          FDA endorsement seal with short health claim
 
FDA2:          FDA endorsement seal with long health claim
 
SBP1:          "See Back Panel"  after short health claim
 
SBP2:          "See Back Panel" after short health claim, with
               long claim on back of package


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Hypertext updated by dms, 01/14/97