Design and development of an instrument to measure overall lifestyle habits for epidemiological research: the Mediterranean Lifestyle (MEDLIFE) index

摘要

Abstract Objective To design and develop a questionnaire that can account for an individuala€?s adherence to a Mediterranean lifestyle including the assessment of diet and physical activity patterns, as well as social interaction. Design The Mediterranean Lifestyle (MEDLIFE) index was created based on the current Spanish Mediterranean food guide pyramid. MEDLIFE is a twenty-eight-item derived index consisting of questions about food consumption (fifteen items), traditional Mediterranean dietary habits (seven items) and physical activity, rest and social interaction habits (six items). Linear regression models and Spearman rank correlation were fitted to assess content validity and internal consistency. Setting A subset of participants in the Aragon Workersa€? Health Study cohort (Zaragoza, Spain) provided the data for development of MEDLIFE. Subjects Participants (n 988) of the Aragon Workersa€? Health Study cohort in Spain. Results Mean MEDLIFE score was 11?·3 (sd 2?·6; range: 0a€“28), and the quintile distribution of MEDLIFE score showed a significant association with each of the individual items as well as with specific nutrients and lifestyle indicators (intra-validity). We also quantified MEDLIFE correspondence with previously reported diet quality indices and found significant correlations (?? range: 0?·44a€“0?·53; P