TABLE 6.
Subgroup analysis on the association between frailty score and rehospitalisation rate.
| Studies (n) | Risk ratio (95% CI) | P-value | Q-test | I2 (%) | P between | |
| Length of follow-up | ||||||
| ≤30 days | 5 | 1.167 (0.911, 1.494) | 0.221 | 2.524 | <0.001 | 0.038 |
| >30 days | 5 | 1.685 (1.320, 2.152) | <0.001 | 29.192 | 86.298*** | |
| Mean age | ||||||
| <70 years old | 4 | 1.558 (1.216, 1.998) | <0.001 | 4.544 | 33.986 | 0.001 |
| 70 years old and more | 5 | 1.856 (1.651, 2.088) | <0.001 | 0.429 | <0.001 | |
| Surgery type | ||||||
| Vascular surgeries | 8 | 1.622 (1.246, 2.112) | <0.001 | 14.476 | 51.644* | 0.211 |
| Amputation only | 2 | 1.371 (1.355, 1.387) | <0.001 | 0.572 | <0.001 | |
| Severity | ||||||
| Mild | 7 | 1.537 (1.252, 1.887) | <0.001 | 32.316 | 81.433*** | 0.570 |
| Severe | 3 | 1.926 (0.909, 4.082) | 0.087 | 0.311 | <0.001 | |
| Amputation and foot ulcer history | ||||||
| No | 7 | 1.532 (1.114, 2.108) | 0.009 | 13.578 | 55.811* | 0.818 |
| Yes | 3 | 1.617 (1.162, 2.249) | 0.004 | 4.443 | 84.990 | |
| Wound | ||||||
| Open wound | 5 | 1.401 (1.143, 1.717) | 0.001 | 7.494 | 46.623 | 0.019 |
| Others | 5 | 1.854 (1.650, 2.084) | <0.001 | 0.456 | <0.001 | |
CI, confidence interval, no medication subgroups data due to all studies belong to no ploy-medication group. *p < 0.05, **p < 0.01, ***p < 0.001. The bold values mean significant p-values.