Table 3.
Comparison of oral pain before radiotherapy, and after 21 d and 42 d of radiotherapy (n, %)
| Time | Group | Grade 0 | Grade 1 | Grade 2 | Grade 3 | Total incidence |
|---|---|---|---|---|---|---|
| Before radiotherapy | Control group (n=46) | 46 (100.00) | 0 | 0 | 0 | 0 (0.00) |
| Test group (n=51) | 51 (100.00) | 0 | 0 | 0 | 0 (0.00) | |
| χ2/Z | 0.000 | 0.000 | ||||
| P | 1.000 | 1.000 | ||||
| After 21 d of radiotherapy | Control group (n=46) | 0 | 11 | 30 | 5 | 46 (100.00) |
| Test group (n=51) | 2 | 24 | 24 | 1 | 49 (96.08) | |
| χ2/Z | 3.055 | 0.005 | ||||
| P | 0.002 | 0.943 | ||||
| After 42 d of radiotherapy | Control group (n=46) | 1 | 12 | 31 | 2 | 45 (97.83) |
| Test group (n=51) | 6 | 21 | 23 | 1 | 45 (88.24) | |
| χ2/Z | 2.625 | 2.045 | ||||
| P | 0.009 | 0.153 | ||||
Note: Pearson’s chi-square test was used for comparison of oral pain between the two groups. Z-test was adopted to test the grades of oral pain between the two groups.