PMC:4137988 / 17015-17379 JSONTXT

{"project":"2_test","denotations":[{"id":"25143747-18198206-55576538","span":{"begin":123,"end":125},"obj":"18198206"},{"id":"25143747-23680284-55576539","span":{"begin":126,"end":128},"obj":"23680284"},{"id":"25143747-20306538-55576540","span":{"begin":129,"end":131},"obj":"20306538"},{"id":"25143747-19213776-55576541","span":{"begin":199,"end":201},"obj":"19213776"},{"id":"25143747-21539616-55576542","span":{"begin":202,"end":204},"obj":"21539616"},{"id":"25143747-20584543-55576543","span":{"begin":269,"end":271},"obj":"20584543"}],"text":"All studies used FFQs to measure dietary intakes, with number of food items or groups ranging from 42 to 166. Three studies38,45,46 calculated a Mediterranean diet score defined a priori. Two studies47,49 derived dietary patterns using PCA or factor analysis. One study48 used a combination of both a posteriori and a priori approaches to measure dietary patterns."}