Table 2.

Statistics of each spatial cluster. Values include toxicity and 5 features used for generating the spatial clusters. Cluster labels were tested for correlation using Fisher’s exact test. Feeding tube alone and Aspiration were both significantly correlated with cluster labels (p < .001) as well as overall RAD (p < .0001).

Spatial Cluster	Count	% RAD	% Feeding Tube	% Aspiration	Extended Oral Cavity Predicted Dose (Gy)	Mandible Predicted Dose (Gy)	Average Medial Pterygoid Muscle Predicted Dose (Gy)	Mandible-Tumor Distance (mm)	Medial Pharyngeal Constrictor-Tumor Distance (mm)
Spatial Cluster 1	3	0	0	0	51.96 (1.97)	39.92 (2.16)	37.94 (0.5)	13.35 (1.44)	0.29 (1.64)
Spatial Cluster 2	114	5.3	3.5	2.6	50.84 (1.37)	38.21 (1.02)	38.03 (1.1)	7.18 (3.82)	12.23 (4.55)
Spatial Cluster 3	35	11.4	8.6	5.7	48.66 (3.20)	36.33 (2.82)	35.91 (2.1)	0.04 (1.81)	0.28 (0.60)
Spatial Cluster 4	48	50	31.3	29.2	57.11 (2.93)	44.84 (3.69)	42.03 (1.9)	1.64 (2.28)	5.86 (4.23)