Table 2.
Validation between the KFI and other measurements
| Variable | KFI score |
Age- and sex-adjusted KFI score |
||
|---|---|---|---|---|
| rho | p value | rho | p value | |
| CHS frailty score | 0.512 | < 0.001 | 0.454 | < 0.001 |
| Grip strength | –0.292 | < 0.001 | –0.210 | < 0.001 |
| Gait speed | –0.423 | < 0.001 | –0.345 | < 0.001 |
| Timed up and go test | 0.497 | < 0.001 | 0.466 | < 0.001 |
| Five-repetition sit-to-stand test | 0.371 | < 0.001 | 0.316 | < 0.001 |
| SPPB score | –0.409 | < 0.001 | –0.345 | < 0.001 |
| MNA score | –0.252 | < 0.001 | –0.241 | < 0.001 |
| MMSE score | –0.262 | < 0.001 | –0.185 | < 0.001 |
| GDS score | 0.522 | < 0.001 | 0.489 | < 0.001 |
| EQ-5D score | –0.493 | < 0.001 | –0.447 | < 0.001 |
| K-ADL score | 0.292 | < 0.001 | 0.275 | < 0.001 |
| Skeletal muscle index | –0.107 | < 0.001 | –0.021 | 0.258 |
Correlations were analyzed using the Spearman test.
KFI, Korean Frailty Index; CHS, Cardiovascular Health Study; SPPB, Short Physical Performance Battery; MNA, Mini Nutritional Assessment; MMSE, Mini-Mental State Examination; GDS, Geriatric Depression Scale; EQ-5D, EuroQol-5 dimensions; K-ADL, Korean activities of daily living.