Fig. 1.

The results of simultaneous swallow assessments on 30 patients by two instruments (FEES and VF) and 3 expert raters. Residue was assessed for 4 food consistencies (thin liquid, puree, soft solid, solid) and on 3 anatomical structures (neopharynx, voice prosthesis, upper esophagus), by 3 raters. The columns represent these ratings. Each row represents one patient. A red square indicates ‘residue present’, and green indicates ‘no residue’. If the rater could not make a judgment, then the square is white. In total, there are 30 patients × 3 raters × 4 consistencies × 3 features = 1080 ratings for VF, and ratings of the same 1080 swallow sequences for FEES. The order of patients is the same for VF and for FEES. Therefore (for example), the top left square in the top and bottom panel relates to the same swallow sequence