Figure 1: Study outline. The master swallow database comprised a total of 100 × 10 mL swallows (10 swallows × two measurements × 5 subjects) recorded in Manoview. Swallows were randomised and then six observers, who received identical training, performed repeat analyses of all swallows. Analyst data sets were then unrandomised and average values for each metric were calculated (i.e., Primary and Repeat Study means for each of the five subjects derived for each of Analyses 1 and 2).