Table 2. Prevalence and diagnostic accuracy for frailty of different cut-offs of the FRAIL scale | FRAIL scale | Prevalence (95% CI) | Sensitivity (95% CI) | Specificity (95% CI) | % of positives who were not frail (95% CI) |
|---|
| | Fried's frailty phenotype | Frailty index | Fried's frailty phenotype | Frailty index | Fried's frailty phenotype | Frailty index |
|---|
| ≥3 | 8.3(5.4 to 11.1) | 37.0(23.7 to 50.3) | 23.6(12.0 to 35.2) | 96.8(94.8 to 98.7) | 94.5(91.9 to 97.0) | 33.3(15.4 to 51.2) | 56.7(37.8 to 75.5) |
| ≥2 | 18.8(14.7 to 22.8) | 66.7(53.7 to 79.7) | 40.0(26.6 to 53.4) | 89.6(86.2 to 93.0) | 85.0(81.0 to 89.0) | 47.1(34.9 to 59.2) | 67.6(56.2 to 79.1) |
| ≥1 | 42.3(37.2 to 47.4) | 83.3(73.1 to 93.6) | 74.5(62.7 to 86.4) | 64.9(59.6 to 70.3) | 63.5(58.1 to 68.9) | 70.6(63.3 to 77.9) | 73.2(66.1 to 80.3) |