| Characteristic | Value |
|---|---|
| Age (yr) | 86.5 (82–99) |
| Hemoglobin (g/dL) | 11.0 (2.7–12.9) |
| Hb<6 | 11 (2.0%) |
| 6≤Hb<8 | 29 (5.3%) |
| 8≤Hb<10 | 99 (18.1%) |
| 10≤Hb | 409 (74.6%) |
| Albumin (g/dL) | 3.5 (1.2–4.8%) |
| Body weight (kg) | 52.1 (26.7–94.3) |
| Height (cm) | 157.5 (133–182) |
| Comorbidity | |
| Cardiac disease | 142 (25.9%) |
| Cerebrovascular disease | 87 (15.9%) |
| Dementia | 61 (11.1%) |
| Pulmonary disease | 33 (6.0%) |
| Prior malignancy | 48 (14.2%) |
| Charlson comorbidity index (score) | 5.7 (4–12%) |