Fig. 4

Symptom scales of the EORTC QLQ-H&N35 (0–100-point scale) from baseline over a 12-month period. Mean values based on patients answering the questionnaire. Higher scores indicate more severe symptoms or impairments. Statistically significant differences compared to baseline: <0.001 at completion of RT in dry mouth, sticky saliva, weight loss, and nutritional supplements; <0.05 at completion of RT in feeling ill, pain killers, feeding tubes, mouth opening, and coughing; <0.001 at 3 months after RT in dry mouth, and sticky saliva; <0.001 at 6 months in dry mouth, and sticky saliva; <0.05 at 6 months in pain killers; <0.001 at 12 months in dry mouth, and sticky saliva