Table 1.
Summary of covariate distributions in UC patients
| Continuous covariates | ||||
|---|---|---|---|---|
| Covariate (units) | N | Mean (SD) | Median | Range |
| TC (%) | 172 | 20.8 (32) | 5 | 0–100 |
| IC (%) | 146 | 29 (26.6) | 20 | 0–100 |
| Baseline tumor (mm) | 186 | 72.9 (49.4) | 59.9 | 16.2–333 |
| LDH (U/L) | 178 | 316 (370) | 227 | 89–4,260 |
| Albumin (g/dL) | 182 | 3.74 (0.529) | 3.81 | 2–4.6 |
| Hemoglobin (g/dL) | 180 | 11.3 (1.55) | 11.3 | 8–15.3 |
| N:L ratio | 178 | 6.22 (7.98) | 3.91 | 0.872–72.3 |
| Age (years) | 186 | 66.2 (9.46) | 67 | 34–88 |
| Categorical covariates | ||
|---|---|---|
| Covariate | Category | N (%) |
| Duration from prior chemotherapy ≤3 months | No | 106 (57) |
| Yes | 80 (43) | |
| ECOG performance status | 0 | 62 (33.3) |
| 1 | 124 (66.7) | |
| Smoking history | Never | 77 (41.4) |
| Ever | 109 (58.6) | |
| Line of therapy | 1 | 9 (4.8) |
| 2 | 113 (60.8) | |
| ≥3 | 64 (34.4) | |
| Liver metastasis | No | 105 (56.5) |
| Yes | 81 (43.5) | |
| LN‐only disease | No | 173 (93) |
| Yes | 13 (7) | |
ECOG, Eastern Cooperative Oncology Group; IC, immune cell PD‐L1 expression; LDH, lactate dehydrogenase; N:L ratio, neutrophil‐to‐lymphocyte ratio; LN, lymph node; TC, tumor cell PD‐L1 expression.