TABLE 2.

General characteristics of the studies included in this review

Author(s)	Country	Participant characteristics	Food product category	Setting		Design	Sample size (n participants)	Statistical analysis approach	Source of funding
				Study setting	Retail setting
Akaichi et al. 39	UK and Spain	Primary household shoppers; aged ≥18 years	Beef mince	Online	Not applicable	Stated preference method ‐ discrete choice experiment survey	UK:1211; Spain:1206	Conditional logit model	The Scottish Government as part of the 2016–2021 Research Program on Food Security
Bellhouse et al. 40	Australia	Australian primary household grocery shopper; aged ≥18 years	Pork product	Australia wide online survey	Not applicable	Stated preference method ‐ discrete choice experiment	861	Pearson's chi‐Squared test	The Pork Cooperative Research Centre (Australian Government)
Buttorff et al. 41	Peru	Low‐income populations; aged ≥18 years	Meal with additional fruits or vegetables	Face‐to‐face	Food venders in low‐income urban area	Stated preference method ‐ discrete choice experiment	432	Conditional and rank‐ordered logit models	The International Development Research Centre (Canada)
Childs and Drake 42	USA	Women (ages 25–55), primary shoppers of the household	Cheddar and Mozzarella cheeses	Online survey	Not applicable	Stated preference method ‐ conjoint analysis survey	203 (Cheddar cheese), 198 (Mozzarella cheese);	General linear model	Dairy Management, Inc. (American Diary Association)
De‐Magistris and Gracia. 43	Spain	Primary household shoppers aged ≥18 years	Semi‐cured, pasteurized sheep milk cheese	Face‐to‐face	Participants' homes in regional area (Castilla‐La‐Mancha)	Stated preference method ‐ experimental auction	129	Not available	European Commission
De‐Magistris, and Lopez‐Galan 28	Spain	Primary food shoppers in households that consumed cheese products, aged ≥ 18 years	Cheese	Face‐to‐face	Participants recruited by research agency and the experiment was conducted on the premises of the agency	Stated preference method ‐ discrete choice experiment	219	Random parameters logit model	European Commission
De‐Magistris, Lopez‐alan and Caputo 44	Spain	Obese and healthy‐weight consumers who are not under any clinical treatment; primary food buyers in households; aged ≥ 18 years	Potato chips	Face‐to‐face	Participants recruited by research agency and the experiment was conducted on the premises of the agency	Stated preference method ‐ discrete choice experiment	309	Random parameters logit model	National Institute of Agricultural and Food Research and Technology (Spain) and European Commission
Di Vita et al. 45	Italy	Bread consumers; mean age 40.9 years	Bread	Face‐to‐face	Large retail store (supermarkets) in Sicily	Stated preference method ‐ contingent valuation method through a face‐to‐face questionnaire	100	Logistic model	Funded by the Project PO FESR 2007–2013 (supported by Sicily local government, Italian Government and European Union)
Jurado and Gracia 46	Spain	Primary household shoppers who consumed breakfast biscuits	Breakfast cereal	Face‐to‐face	Mock/real‐brick supermarket in medium‐sized town	Stated preference method ‐ discrete Choice Experiment	121	Latent class logit model	Gobierno de Aragón (Government of Aragon)
Leak et al. 47	USA	Youth (10–18 years); visitors to corners stores	Whole grain snack in combination with either fruits or vegetables	Face‐to‐face	Corners stores in low‐income communities in New York	Stated preference method ‐ contingent valuation (a one‐and‐one‐half‐bound dichotomous choice approach)	402	Multiple linear regression	The United States Department of Agriculture (USDA)
Lee et al. 48	USA	Employees and students at the University of Illinois at Urbana Champaign (82% female); aged ≥18 years	Breakfast cereal	Face‐to‐face	University campus	Stated preference method ‐ conjoint analysis	367	Ordinary least squares regression	The Illinois Soybean Association
Lee et al. 49	South Korea	Supermarket consumers	Canned ham	Face‐to‐face survey	Supermarkets	Stated preference method ‐ discrete choice experiment	300	Random parameters logit model	The National Research Foundation of Korea Grant funded by the Korean Government
Lusk and Parker 50	USA	Primary shoppers for home; aged ≥18 years	Ground beef	Delivered through mail survey	Home	Stated preference method ‐ discrete choice experiment	220	Multinomial Logit Model Estimates	Source of funding was not reported
Nganje et al. 51	USA	N/A (used sales data)	Breads	Not applicable	Grocery and non‐grocery stores	Revealed preference method‐ data obtained from grocery and non‐grocery stores in regional market in Minnesota and North Dakota	N/A (used sales data)‐ number of observations 681 (include both conventional and low‐ carb bread)	Maximum Likelihood Estimation	Source of funding was not reported
Van Wezemael et al. 29	France, Belgium, Netherland, UK	Beef consumers (i.e., people consuming beef at least once a month)	Beef steak	Online questionnaires	Not applicable	Stated preference method ‐ discrete choice experiment	2,400 (600 in each country)	Multinomial logit and error component models	The European Union