Fig. 3From: Long-term patient reported outcomes following radiation therapy for oropharyngeal cancer: cross-sectional assessment of a prospective symptom survey in patients ≥65 years oldHeat map of the severity ratings for the 22 individual MDASI-HN symptom items, for each individual patient (numbered 1–79), and grouped by hierarchal cluster analysis of patients with accompanying dendrogram (far right of the figure). Three patient clusters were identified (labelled A, B, and C). The dendrogram shows how similarly individual patients reported symptom severity across all 22 items. The lines that join further to the left side of the dendrogram suggest these patients reported similar symptom pattern and severity ratingsBack to article page