Table 2.
Radiation parameters.
| Variable | No RN (n=18) | RN (n=28) | Total (n=46) | p-value |
|---|---|---|---|---|
| Total dose (Gy) | 0.19 | |||
| Mean (SD) | 22.9 (3.52) | 21.3 (4.37) | 21.9 (4.10) | |
| Median [Min, Max] | 22.5 [18.0, 30.0] | 20.0 [10.0, 27.5] | 20.0 [10.0, 30.0] | |
| Fractions | >0.95 | |||
| 1 | 11 (61.1%) | 17 (60.7%) | 28 (60.9%) | |
| 5 | 7 (38.9%) | 11 (39.3%) | 18 (39.1%) | |
| CTV (cc) | 0.86 | |||
| Mean (SD) | 8.21 (11.3) | 9.75 (14.2) | 9.15 (13.0) | |
| Median [Min, Max] | 5.74 [0.312, 44.9] | 4.19 [0.104, 54.1] | 5.15 [0.104, 54.1] | |
| Missing | 2 (11.1%) | 3 (10.7%) | 5 (10.9%) | |
| GTV (cc) (single-fraction only) | 0.84 | |||
| Mean (SD) | 4.72 (5.81) | 5.82 (8.51) | 5.39 (7.51) | |
| Median [Min, Max] | 3.27 [0.138, 21.5] | 2.60 [0.0264, 34.8] | 2.63 [0.0264, 34.8] | |
| Missing | 2 (18.2%) | 2 (11.8%) | 4 (14.3%) | |
| CI | 0.55 | |||
| Mean (SD) | 1.30 (0.240) | 1.34 (0.29) | 1.32 (0.27) | |
| Median [Min, Max] | 1.23 [1.03, 1.84] | 1.29 [1.03, 2.35] | 1.25 [1.03, 2.35] | |
| Missing | 2 (11.1%) | 3 (10.7%) | 5 (10.9%) | |
| V12Gy (cc) | 0.59 | |||
| Mean (SD) | 6.55 (6.74) | 7.49 (6.20) | 7.14 (6.28) | |
| Median [Min, Max] | 3.96 [0.947, 20.2] | 5.23 [1.66, 23.1] | 5.18 [0.947, 23.1] | |
| Missing | 2 (11.1%) | 3 (10.7%) | 5 (10.9%) |
CI, conformity index; CTV, clinical target volume; GTV, gross tumor volume; Gy, gray; SD, standard deviation; V12Gy, volume receiving 12Gy.