Table 3 Comparison of methods for diagnostic accuracy of diabetic foot ulcers (N = 518)
Method | Chart review* | Accuracy and agreement measures (95% CI)† | ||||||
|---|---|---|---|---|---|---|---|---|
Yes | No | Sensitivity | Specificity | PPV | NPV | Kappa | ||
Holzer | Yes | 148 | 59 | 94.9 | 83.7 | 71.5 | 98.4 | 0.69 |
No | 8 | 303 | (90.1-97.8) | (79.5-87.4) | (64.8-77.5) | (97.9-98.7) | (0.66-0.72) | |
Mayfield | Yes | 152 | 95 | 97.4 | 73.8 | 61.5 | 98.5 | 0.64 |
No | 4 | 267 | (93.6-99.3) | (68.9-78.2) | (55.2-67.6) | (98.0-98.8) | (0.61-0.67) | |
Ramsey | Yes | 144 | 31 | 92.3 | 91.4 | 82.3 | 98.3 | 0.73 |
No | 12 | 331 | (86.9-96.0) | (88.1-94.1) | (75.8-87.6) | (97.8-98.7) | (0.70-0.76) | |
Harrington | Yes | 147 | 36 | 94.2 | 90.1 | 80.3 | 98.4 | 0.73 |
No | 9 | 326 | (89.3-97.3) | (86.5-92.9) | (73.8-85.8) | (97.9-98.7) | (0.70-0.76) | |
New | Yes | 145 | 33 | 92.9 | 90.9 | 81.5 | 98.3 | 0.73 |
No | 11 | 329 | (87.7-96.4) | (87.4-93.6) | (75.0-86.9) | (97.9-98.7) | (0.70-0.76) | |