Table 3.
Association between sarcopenia and readmission (3-year follow-up) according to Cox Regression Models adjusted for potential confounders.
| Unadjusted | Model 1 | Model 2 | Model 3 | |
|---|---|---|---|---|
| Sarcopenia index per 1-SD | 0.87 (0.75–1.01) | 0.90 (0.78–1.06) | 0.96 (0.82–1.12) | 0.97 (0.77–1.25) |
| Quartile of sarcopenia index | ||||
| Q1 | 1.68 (1.11–2.56) | 1.40 (0.90–2.18) | 1.33 (0.85–2.07) | 1.23 (0.77–1.99) |
| Q2 | 1.43 (0.93–2.19) | 1.29 (0.83–2.01) | 1.11 (0.70–1.75) | 0.97 (0.58–1.61) |
| Q3 | 1.17 (0.76–1.80) | 1.03 (0.66–1.61) | 1.03 (0.61–1.62) | 1.10 (0.68–1.76) |
| Q4 | 1 (reference) | 1 (reference) | 1 (reference) | 1 (reference) |
Data are presented as hazard ratios (95% confidential intervals). Sarcopenia index was treated as both a categorical variable (using quartile cutoff points) and a continuous variable (per 1-SD), separately.
Q stands for sarcopenia index: Q1 is the lowest quartile and Q4 is the highest quartile. Cutoffs for sarcopenia index are Q1 < 63.9, Q2 63.9-74.3, Q3 74.3-84.2, Q4 > 84.3.
Model 1: adjusted for age and gender. Model 2: adjusted for age, gender, depression and cognitive impairment. Model 3: adjusted for age, gender, depression, cognitive impairment, nutrition status, hemoglobin, body mass index, calf circumference, gait speed, and handgrip strength.