Abstract
LEARNING OUTCOME: To create an awareness of the impact of brand name on acceptability and preference ratings of liquid nutritional supplements. The purpose of this study was to examine the impact of knowing brand name on acceptability and preference ratings for liquid nutritional supplements. Twenty extended care patients, who currently were receiving a liquid supplement, agreed to participate in the study. Four supplement products, which were similar in composition but produced by different manufacturers, were sampled in the study; some had been heavily advertised to consumers others had not. Study participants first sampled the products blinded, i.e. samples were labeled only A, B, C, or D; two hours later participants again sampled products with the company and brand name clearly identified. Participants were asked to rate the acceptability of the supplement using a five point scale ranging from 1, totally unacceptable to 5, totally acceptable and were asked to identify which product they preferred. All participants sampled the vanilla flavored product; 7 also sampled the chocolate flavor and 13 sampled the strawberry flavor based on their flavor preference. Acceptability ratings ranged from 2.10 to 4.38. Analysis of variance results indicated a significant difference (p≤.05) in acceptability ratings for the products, both when samples were blinded as well as when product information was identified. Ratings of the blinded vanilla and strawberry flavored products indicated that the product receiving the highest acceptability rating also was the product most preferred. When product brand was known preference for each flavor of the most highly advertised product more than doubled (22%→45%, 14%→43%, 15→38%, respectively). Nearly all mean acceptability ratings increased, some significantly (p≤.05), when the product brand was identified. Results suggest that knowing product brand name may impact overall acceptability ratings and patient preferences for liquid nutritional supplements.
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