The KNOWLEDGE Score, to which the fifth section is dedicated, is the score used to understand the degree to which individuals are aware of MD, already validated and used in the PREDIMED study (15). In this section of the questionnaire, each participant was asked to answer 13 questions about daily alimentary habits, with the aim of understanding each person’s knowledge. The subjects answered True or False to the following questions:
From the answers obtained a knowledge score ≤ 9 was considered related to a low level of knowledge, while a score ≥ 9 to a high level of knowledge.
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