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Univariate analysis of measurement data for the risk of grade ≥2 radiation pneumonitis in patients with lung cancer after radiation therapy.
| Parameter | Number of patients | Median | Range | P |
|---|---|---|---|---|
| Age (years) | 160 | 59 | 25~75 | 160 |
| V20 (%) | 160 | 36 | 3~75 | 160 |
| GTV (cm3) | 160 | 127.54 | 13.12~780.36 | 160 |
GTV: gross tumor volume; V20 = percentage volume of structure receiving dose of 20 Gy or more.
