FGDs with experts
Two FGDs were held with ‘food science and nutrition experts’ (hereinafter referred to as ‘FSN experts’ for the sake of brevity). For this group, the sampling method was purposeful and FSN experts from two universities of Tehran participated in the FGDs. First, official letters were sent to the Heads of Departments of Nutritional Sciences and Dietetics and the study objective was explained. Then, a day was coordinated to hold the FGD with the aforementioned professionals. The FGDs with FSN experts were conducted with 6 PhD graduates of nutrition and 8 PhD graduates of food sciences from universities in Tehran.The mothers’ expectations regarding the PACE labels were discussed and the FSN experts’ comments were collected in two separate FGDs. The average duration of each FGD was about 1 h. The labels were then amended upon consensus among the researchers and sent to the mothers to outline the final format of the PACE labels. Most of the changes the mothers requested pertained to the appearance of the new PACE label. Ultimately, the final versions of the new labels were designed.