Table 3. P-values for t-tests and logistic regression comparing Grade 1 and ≥ Grade 2 radiation pneumonitis in both poorly and highly ventilated regions.
| Variation | p-Value | p-Value |
|---|---|---|
| (t-test) | (logistic regression) | |
| Grade 1 vs. ≧ Grade 2 | ||
| Poorly ventilation (30th percentile range) | ||
| Mean Dose | 0.0487 | 0.0462 |
| V 5 | 0.0006 | 0.2669 |
| V 20 | 0.0070 | 0.0150 |
| Highly ventilation (70 th percentile range) | ||
| Mean Dose | 0.1118 | 0.6458 |
| V 5 | 0.0438 | 0.7195 |
| V 20 | 0.0486 | 0.9839 |
| total lung | ||
| Mean Dose | 0.1752 | 0.5724 |
| V 5 | 0.0006 | 0.2003 |
| V 20 | 0.0086 | 0.5286 |