Table 1 . The Search strategy .

Domain	Search strategy
Obesity/overweight	Search strategy in PubMed/Medline ("Body Mass Index"[Mesh] OR "Body Mass Index"[All Fields] OR "Overweight"[Mesh]) OR "Overweight"[All Fields] OR "Obesity"[Mesh] OR "Obesity"[All Fields] OR "Quetelet* Index"[ All Fields] AND ("Iran"[Mesh] OR "iran"[All Fields]) OR Iranian[All Fields] OR I.R.Iran[All Fields] OR "I.R Iran"[All Fields] OR ("persia"[MeSH Terms] OR "persia"[All Fields AND "humans"[MeSH Terms])
	Search strategy in ISI Web of Science
	Topic= ("Body Mass Index" OR "Overweight" OR "Obesity” OR "Quetelet* Index") AND (("Iran" OR Iranian OR I.R.Iran OR "persia") OR Address= (Iran))
	Search strategy in Scopus
	(TITLE-ABS-KEY (Body Mass Index" OR "Overweight" OR "Obesity” OR "Quetelet* Index")) AND (TITLE-ABS-KEY (Iran OR Iranian OR I.R.Iran OR Persia) OR (AFFIL (Iran))
	IranMedex, SID and Irandoc
	“Body Mass Index”, “BMI”, “Overweight”, “Obesity”, “Quetelet* Index”, “Chaghi”, “Shakhese tudeh e badani”, “ezafe vazn”, “Dore kamar” , in Persian language
Socioeconomic factors	((((((("Socioeconomic Factors"[Mesh] OR "Poverty"[Mesh]) OR "Social Class"[Mesh]) OR "Educational Status"[Mesh]) OR "Employment"[Mesh]) OR "Family Characteristics"[Mesh]) OR "Income"[Mesh]) OR "Occupations"[Mesh]) OR "Social Conditions"[Mesh] OR "Standard of Living"[All Fields] OR "living standard"[All Fields] OR "land tenure"[All Fields] OR "High-Income Population"[All Fields] OR "High Income Population"[All Fields] OR ("socioeconomic factors"[MeSH Terms] OR ("socioeconomic"[All Fields] AND "factors"[All Fields]) OR "socioeconomic factors"[All Fields] OR "inequality"[All Fields]) OR ("socioeconomic factors"[MeSH Terms] OR ("socioeconomic"[All Fields] AND "factors"[All Fields]) OR "socioeconomic factors"[All Fields] OR "inequalities"[All Fields])
Geographic area	((("iran"[MeSH Terms] OR "iran"[All Fields]) OR iranian[All Fields] OR I.R.Iran[All Fields] OR "persia"[MeSH Terms]) OR (("iran"[MeSH Terms] OR "iran"[All Fields]) OR iranian[All Fields] OR I.R.Iran[All Fields] OR persia[Title/Abstract])) OR (("iran"[MeSH Terms] OR "iran"[All Fields]) OR iranian[All Fields] OR I.R.Iran[All Fields] OR persia[Text Word])