Table 3.
Provider-reported toxicity—photon.
| Group |
|||||
|---|---|---|---|---|---|
| Covariate | Statistics | Level | Photon+RS N = 50 |
Photon-RS N = 38 |
P-valuea |
| A-GU | N (Col %) | 0 | 6 (12.50) | 5 (13.51) | .90 |
| N (Col %) | 1 | 11 (22.92) | 7 (18.92) | ||
| N (Col %) | 2+ | 31 (64.58) | 25 (67.57) | ||
| A-GI | N (Col %) | 0 | 33 (68.75) | 26 (70.27) | 1.000 |
| N (Col %) | 1 | 13 (27.08) | 10 (27.03) | ||
| N (Col %) | 2+ | 2 (4.17) | 1 (2.70) | ||
| L-GU | N (Col %) | 0 | 13 (28.89) | 8 (21.05) | .27 |
| N (Col %) | 1 | 4 (8.89) | 9 (23.68) | ||
| N (Col %) | 2+ | 28 (62.22) | 21 (55.26) | ||
| L-GI | N (Col %) | 0 | 35 (77.78) | 32 (84.21) | .06 |
| N (Col %) | 1 | 9 (20.00) | 2 (5.26) | ||
| N (Col %) | 2+ | 1 (2.22) | 4 (10.53) | ||
| R-GU | N (Col %) | 0 | 20 (44.44) | 10 (26.32) | .27 |
| N (Col %) | 1 | 4 (8.89) | 7 (18.42) | ||
| N (Col %) | 2+ | 21 (46.66) | 21 (55.26) | ||
| R-GI | N (Col %) | 0 | 38 (84.44) | 35 (92.11) | .56 |
| N (Col %) | 1 | 6 (13.33) | 2 (5.26) | ||
| N (Col %) | 2+ | 1 (2.22) | 1 (2.63) | ||
Notes: Univariable analysis of CTCAE v5.0 toxicity at specified time points in photon-treated patients.
Abbreviations: Photon+RS, proton with rectal spacer; Photon-RS, photon without rectal spacer; and A/L/R GU and GI, acute (<3 months), max late (≥3 months), most recent (≥3 months) genitourinary and gastrointestinal toxicities, respectively.
a
The P-value is calculated by the χ2 test or Fisher exact, where appropriate.