Table 1.
Patient characteristics
| Characteristics | Overall | CT and RT-PCR | CT only | P-value |
|---|---|---|---|---|
| N | 480 | 313 | 167 | |
| CT simulation, n (%) | ||||
| Yes | 480 (100.0) | 313 (100.0) | 167 (100.0) | 1.000 |
| No (already on treatment) | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Age, median (IQR), y | 62.00 (50.00-70.00) | 62.00 (50.00-70.00) | 62.00 (50.00-70.50) | .942 |
| Age, y (%) | ||||
| <15 | 21 (4.4) | 11 (3.5) | 10 (6.0) | .218 |
| 15-44 | 72 (15.0) | 46 (14.7) | 26 (15.6) | |
| 45-64 | 203 (42.3) | 143 (45.7) | 60 (35.9) | |
| 65-74 | 129 (26.9) | 77 (24.6) | 52 (31.1) | |
| ≥75 | 55 (11.5) | 36 (11.5) | 19 (11.4) | |
| Sex, n (%) | ||||
| Female | 228 (47.5) | 157 (50.2) | 71 (42.5) | .133 |
| Male | 252 (52.5) | 156 (49.8) | 96 (57.5) | |
| Tumor type, n (%) | ||||
| Brain tumor | 20 (4.2) | 10 (3.2) | 10 (6.0) | .010 |
| Breast cancer | 68 (14.2) | 46 (14.7) | 22 (13.2) | |
| Endocrine cancer | 18 (3.8) | 8 (2.6) | 10 (6.0) | |
| Gastrointestinal cancer | 43 (9.0) | 34 (10.9) | 9 (5.4) | |
| Gynecologic cancer | 40 (8.3) | 33 (10.5) | 7 (4.2) | |
| Head and neck cancer | 67 (14.0) | 50 (16.0) | 17 (10.2) | |
| Hematologic cancer | 21 (4.4) | 13 (4.2) | 8 (4.8) | |
| Lung carcinoma | 78 (16.2) | 46 (14.7) | 32 (19.2) | |
| Pediatric cancer | 29 (6.0) | 14 (4.5) | 15 (9.0) | |
| Sarcoma | 29 (6.0) | 18 (5.8) | 11 (6.6) | |
| Skin cancer | 16 (3.3) | 12 (3.8) | 4 (2.4) | |
| Urologic cancer | 51 (10.6) | 29 (9.3) | 22 (13.2) | |
| Type of radiation therapy (%) | ||||
| Brachytherapy | 18 (3.8) | 17 (5.4) | 1 (0.6) | .016 |
| External radiation therapy | 462 (96.2) | 296 (94.6) | 166 (99.4) | |
| Hospitalization for brachytherapy, median (IQR), d | 3.00 (3.00-4.00) | 3.00 (3.00-4.00) | 7.00 (7.00-7.00) | .080 |
| No. of radiation therapy sessions, median (IQR) | 11.00 (5.00-24.00) | 10.00 (5.00-20.00) | 15.00 (5.00-25.00) | .374 |
| Symptoms at the time of inclusion, n (%) | ||||
| No | 426 (88.8) | 275 (87.9) | 151 (90.4) | .077 |
| Yes | 41 (8.5) | 32 (10.2) | 9 (5.4) | |
| NA | 13 (2.7) | 6 (1.9) | 7 (4.2) | |
| Chest CT scans received by patients, no. of patients (%) | ||||
| 1 | 447 (93.1) | 289 (92.3) | 158 (94.6) | .746 |
| 2 | 30 (6.2) | 21 (6.7) | 9 (5.4) | |
| 3 | 2 (0.4) | 2 (0.6) | 0 (0.0) | |
| 4 | 1 (0.2) | 1 (0.3) | 0 (0.0) | |
| CO-RADS score (%) | ||||
| 1 | 234 (48.8) | 139 (44.4) | 95 (56.9) | < .001 |
| 2 | 201 (41.9) | 132 (42.2) | 69 (41.3) | |
| 3 | 20 (4.2) | 18 (5.8) | 2 (1.2) | |
| 4 | 15 (3.1) | 14 (4.5) | 1 (0.6) | |
| 5 | 10 (2.1) | 10 (3.2) | 0 (0.0) | |
| RT-PCR tests received by patients, no. of patients (%) | ||||
| None | 167 (34.8) | 0 (0.0) | 167 (100.0) | < .001 |
| 1 | 207 (43.1) | 207 (66.1) | 0 (0.0) | |
| 2 | 68 (14.2) | 68 (21.7) | 0 (0.0) | |
| 3 | 27 (5.6) | 27 (8.6) | 0 (0.0) | |
| 4 | 10 (2.1) | 10 (3.2) | 0 (0.0) | |
| 6 | 1 (0.2) | 1 (0.3) | 0 (0.0) | |
| COVID-19 | ||||
| RT-PCR or clinically positive | 26 (5.4) | 25(8.0) | 1 (0.6) | .001 |
Abbreviations: CO-RADS = COVID-2019 Reporting and Data System classification; CT = computed tomography; IQR = interquartile range; RT-PCR = reverse-transcription polymerase chain reaction.