Table 1. Participants’ characteristics.
| Total | Male | Female | p-value* | |
|---|---|---|---|---|
| (n = 399) | (n = 180) | (n = 219) | ||
| Age, years | 83.0 (77.0–88.0) | 82.0 (76.0–87.8) | 84.0 (79.0–88.0) | 0.004 |
| Height, cm | 152.0 (147.0–161.0) | 162.0 (155.0–165.0) | 148.0 (144.0–150.0) | < 0.001 |
| Weight, kg | 46.5 (39.5–54.0) | 51.0 (44.9–57.0) | 43.6 (36.2–49.6) | < 0.001 |
| BMI, kg/m2 | 19.9 (17.4–22.5) | 19.7 (17.5–22.3) | 20.0 (17.4–22.6) | 0.927 |
| Length of hospital stay, days | 25.0 (12.0–39.0) | 25.5 (14.0–40.8) | 25.0 (11.0–39.0) | 0.481 |
| Quadriceps thickness, cm | 1.2 (0.9–1.5) | 1.2 (0.9–1.6) | 1.1 (0.8–1.4) | 0.006 |
| Quadriceps echo intensity (gray-scale range, 0–255) | 84.1 (69.1–99.7) | 79.7 (66.3–94.4) | 87.0 (73.8–103.9) | < 0.001 |
| Subcutaneous fat thickness of the thigh, cm | 0.4 (0.3–0.5) | 0.4 (0.2–0.5) | 0.4 (0.3–0.6) | 0.008 |
| Food Intake Level Scale | 8.0 (7.0–9.0) | 8.0 (7.0–9.0) | 8.0 (7.0–8.0) | 0.435 |
| C-reactive protein, mg/dl | 0.5 (0.4–1.7) | 0.6 (0.4–2.2) | 0.4 (0.4–1.4) | 0.101 |
| Serum albumin, g/dl | 3.4 (3.0–3.7) | 3.3 (3.0–3.6) | 3.4 (3.1–3.7) | 0.265 |
| Geriatric Nutritional Risk Index | 87.6 (80.2–94.1) | 87.6 (78.6–93.8) | 87.6 (81.2–94.4) | 0.563 |
| Updated Charlson comorbidity index | 2.0 (0.0–3.0) | 2.0 (1.0–4.0) | 2.0 (0.0–3.0) | < 0.001 |
| Number of medications | 7.0 (5.0–10.0) | 7.0 (4.0–9.0) | 7.0 (5.0–10.0) | 0.307 |
| Motor-FIM score | 41.0 (21.0–62.0) | 43.0 (20.3–63.0) | 39.0 (21.0–60.0) | 0.331 |
Data are presented as median (interquartile range).
BMI, body mass index; FIM, Functional Independence Measure.
*Mann-Whitney U test (male versus female).