Method triangulation to assess different aspects of food safety culture in food service operations.

The advantages and added value of applying method triangulation to gain a more comprehensive evaluation of the prevailing food safety culture in catering establishments is illustrated by means of a case study. Three methods are applied assessing the food safety culture in food service operations of a Flemish University spread over different locations in the city of Ghent, but centrally managed. Each method sheds light on one of the aspects of 'food safety culture' as defined in the food safety culture conceptual model, in which food safety culture is considered as the interplay between a techno-managerial route/aspect and a human route/aspect. Two system and product related methods, being internal audits and verification of monitoring data of Critical Control Points (CCPs) as part of the HACCP system, both assessing the performance of the food safety management system and as such belonging to the techno-managerial route, are compared with a people related method using the food safety climate self-assessment tool, which is belonging to the human route. By triangulation of these three methods different aspects of the food safety culture at the different locations could be investigated, illustrating how single-method derived results could lead to wrong conclusions. Moreover, by combining the assessment methods case by case, locations in which the hazard of optimistic bias and complacency might exist, can be identified. As such, more tailored and location specific strategies for improvement of food safety management and/or food safety culture can be put in place.