A. H. Auchincloss et al.
Among customers at labeled restaurants who said they saw menu labels (76% or n=250), 98% reported seeing calories; about 70% reported seeing information other than calories (sodium, saturated or trans-fat, carbohydrates); and 50% reported seeing sodium information. Twenty-six percent of all customers at labeled restaurants (84/327) and 34% of customers who saw labels (84/250) reported that nutrition information influenced their ordering decisions. Among users of calorie and sodium labels (n=84), nearly all said calories influenced their decision, but only 24% said so about sodium (n=20). Customers who reported that they saw sodium (n=122) and that it affected their order (n=20) were similar to people who were more likely to see and use any nutrition information; thus, results for this small subgroup are not reported separately.
Auchincloss, A. H., Mallya, G. G., Leonberg, B. L., Ricchezza, A., Glanz, K., & Schwarz, D. F. (2013). Customer responses to mandatory menu labeling at full-service restaurants. American Journal of Preventive Medicine 45, 710-719. doi:10.1016/j.amepre.2013.07.014