Fig. 1

Occurrence of oral mucositis of (a) all grades and (b) grade ≥ 2. There was no statistically significant difference in the occurrence of all grades of oral mucositis between the sodium azulene sulfonate L-glutamine (GA) and control groups (a, P = 0.068, chi-square test). However, the occurrence of grade ≥ 2 oral mucositis was significantly lower in the GA group than in the control group (b, P = 0.038, chi-square test). This figure shows the proportion of patients (%) with oral mucositis