Designing a national restaurant inspection disclosure system for New Zealand

The World Health Organization estimates that up to 30% of individuals in developed countries become ill from contaminated food or water each year, and up to 70% of these illnesses are estimated to be linked to food service facilities. The aim of restaurant inspections is to reduce foodborne outbreaks and enhance consumer confidence in food service. Inspection disclosure systems have been developed as tools for consumers and incentives for food service operators. Disclosure systems are common in developed countries but are inconsistently used, possibly because previous research has not determined the best format for disclosing inspection results. This study was conducted to develop a consistent, compelling, and trusted inspection disclosure system for New Zealand. Existing international and national disclosure systems were evaluated. Two cards, a letter grade (A, B, C, or F) and a gauge (speedometer style), were designed to represent a restaurant's inspection result and were provided to 371 premises in six districts for 3 months. Operators (n = 269) and consumers (n = 991) were interviewed to determine which card design best communicated inspection results. Less than half of the consumers noticed cards before entering the premises; these data indicated that the letter attracted more initial attention (78%) than the gauge (45%). Fifty-eight percent (38) of the operators with the gauge preferred the letter; and 79% (47) of the operators with letter preferred the letter. Eighty-eight percent (133) of the consumers in gauge districts preferred the letter, and 72% (161) of those in letter districts preferring the letter. Based on these data, the letter method was recommended for a national disclosure system for New Zealand.