Table 4 Sensitivity, specificity, positive- and negative predicitive value (%) for detecting use of polypharmacy (4 or more regular prescription medicines) according to resource utilisation band (RUB).
From: Validating the Johns Hopkins ACG Case-Mix System of the elderly in Swedish primary health care
model A | model B | model C | model D | model E | |
|---|---|---|---|---|---|
Sensitivity | 31.9 | 33.6 | 38.4 | 46.3 | 41.2 |
Specificity | 88.5 | 89.2 | 89.8 | 90.1 | 90.2 |
Positive predicitive value | 55.4 | 58.3 | 62.7 | 67.8 | 65.5 |
Negative predicitive value | 74.4 | 75.0 | 76.5 | 78.9 | 77.4 |
Correctly classified | 71.0 | 72.0 | 73.9 | 76.6 | 75.1 |
Area under ROC curve | 0.72 (0.69–0.75)a | 0.73 (0.70–0.76) | 0.76 (0.73–0.79) | 0.80 (0.77–0.82) | 0.77 (0.74–0.80) |
Goodness-of-fit | 0.90 | 0.39 | 0.64 | 0.31 | 0.01 |