Table 2.

Search strategies for databases searched^a

Databases	Search Strategies a
CINAHL via EBSCO	#1 (SU nutrition n2 education AND Behavior) OR SU nutrition education OR (nutrition AND Instruction) OR TX “Nutrition Instruction” AND #2 SU control group OR research design
PubMed	#1 “Nutritional Sciences/education” [MeSH] OR (Nutrition AND (“Health Knowledge, Attitudes, Practice” [MeSH] OR “Health Education/methods” [MeSH] OR “Health Behavior” [MeSH] OR “Health Promotion/methods” [MeSH])) OR (Food AND Nutrition AND Education) AND #2 “Control Groups” [MeSH] OR “Research Design” [MeSH] OR “Randomized Controlled Trial as Topic” [MeSH] OR “Non-Randomized Controlled Trial as Topic” [MeSH]
PsycINFO via OvidSP	#1 (exp Nutrition/AND exp. Education/) OR exp. Health Education/OR Nutrition Instruction.mp. OR (exp Nutrition/AND exp. Intervention/) OR (exp Nutrition/AND (exp Education OR exp. Health Behavior/OR exp. Health Promotion/OR exp. Health Knowledge/)) AND #2 exp. Experiment Controls/OR exp. Experimental Design/OR Randomized Controlled Trial.mp.
Web of Science	#1 “Nutrition Education” OR “Nutrition Instruction” OR “Nutrition Intervention” AND #2 “Control Groups” OR “Research Design” OR “Quasi experimental Design”
ERIC via EBSCO	#1 “Nutrition Instruction” OR (“Nutrition” AND “Education”) OR (“Nutrition” AND “Instruction”) AND #2 “Control Groups” OR “Research Design” OR “Quasiexperimental Design” OR “Quasi experimental Design”

^aSearch results were limited to English and publication from January 2005 to December 2015