From: Concurrent vs. sequential chemoradiotherapy: a survival boost for lung cancer patients
Group | Radiation pneumonitis | |||
---|---|---|---|---|
 | Grade II | Grade III | Grade IV | Total incidence |
The control group (n = 78) | 1 (1.28) | 1 (1.28) | 5 (6.41) | 7 (8.97) |
The observation group (n = 80) | 17 (21.25) | 3 (3.75) | 0 (0.00) | 20 (25.00) |
x2 value | 15.599 | 0.975 | 5.300 | 7.159 |
P value | < 0.001 | 0.323 | 0.021 | 0.007 |