Table 3 Comparison of the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) including 95 % confidence intervals (CI) for each outcome between the public health nurses’ (PHNs) perception of frailty, the Clinical Frailty Scale (CFS) and the Risk Instrument for Screening in the Community (RISC), taking a cut-off of ≥2 (based on ROC curve analysis)
Outcome | Variable | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
(95 % CI) | (95 % CI) | (95 % CI) | (95 % CI) | ||
Institutionalization | PHNs perception of frailty | 52 % | 59 % | 13 % | 92 % |
(48–55 %) | (56–63 %) | (9–16 %) | (89–94 %) | ||
CFS | 76 % | 48 % | 14 % | 95 % | |
(73–79 %) | (45–52 %) | (11–18 %) | (92–97 %) | ||
RISC | 58 % | 76 % | 22 % | 94 % | |
(55–62 %) | (73–79 %) | (16–27 %) | (92–96 %) | ||
Hospitalization | PHNs perception of frailty | 46 % | 59 % | 19 % | 84 % |
(42–49 %) | (56–63 %) | (15–24 %) | (80–87 %) | ||
CFS | 61 % | 47 % | 20 % | 85 % | |
(58–65 %) | (44–51 %) | (16–24 %) | (81–89 %) | ||
RISC | 70 % | 46 % | 22 % | 88 % | |
(66–73 %) | (43–50 %) | (18–26 %) | (84–91 %) | ||
Death | PHNs perception of frailty | 66 % | 63 % | 25 % | 91 % |
(63–69 %) | (59–66 %) | (20–30 %) | (88–93 %) | ||
CFS | 74 % | 50 % | 22 % | 91 % | |
(71–77 %) | (46–53 %) | (18–25 %) | (88–94 %) | ||
RISC | 66 % | 69 % | 28 % | 92 % | |
(63–69 %) | (65–72 %) | (23–33 %) | (89–94 %) |