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Table 3 Number of patients with hearing impairment according to the Common Terminology Criteria for Adverse Events version 4

From: Cochlea sparing effects of intensity modulated radiation therapy in head and neck cancers patients: a long-term follow-up study

  Grade 0 Grade 1 Grade 2 Grade 3 Grade 4 Total Grade 1-4
Short-term 22 (61%) 6 (17%) 4 (11%) 4 (11%) 0 14 (39%)
Long-term 23 (64%) 6 (17%) 4 (11%) 3 (8%) 0 13 (36%)